2, 4
"Closeness"

Thunderlane found himself back on the floor, Derpy's lower half in front of him. First thing to go was the diaper. He stripped it away like a pair of panties, coming up between Derpy's legs to do so... grinning at her. He threw it to the side and stared at his Special Somepony, sticking his tongue just past his teeth. He continued to grin as he poked her with a hoof.

"Feel like giving me a show?" He brushed a hoof past his shoulder. "I'd very much like it."

Sitting up, Derpy blushed furiously. This was being playful, just like she'd wanted. She slowly slipped her shoulders out of the bathrobe, just as Thunderlane had showed her... watching his smile grow. It fell listlessly away from her body.

"Now lay back," he instructed, coolly. Derpy did as she was told. "Get comfortable.... it's okay. Let Thundie take care of you. You know I'm not going to hurt you, right?"

This felt strange to Derpy... almost comforting. She lay there, instinctively opening her legs, giggling as the pegasus realized she was getting into a familiar diaper-position... just as she did for Mommy when she was eight or the times she was too sick to diaper herself. Thunderlane took her smile for reassurance.

The two looked at each other, smiling. Thunderlane's head quickly disappeared between Derpy's legs. She knew what he was going to do well before she felt the warm, wet tickly sensation against her inner thighs. She was looking forward to it. He held her legs open and....

"Bleaah!" Thunderlane's head whipped back. He ran his teeth over his tongue and wiped his lips. He looked at her, his posture clearly annoyed. "Yuck!"

"What is it, Thundie? W- what'd I do?"

The pegasus spat a couple of times, continuing to rub his mouth vigorously with a hoof. He had one thing to say:

"Foal powder tastes TERRIBLE!"

Derpy couldn't help laughing.

"I'm so sorry, Thundie!" she said. "Maybe I should've wiped myself first."

"It doesn't matter." He wiped her off with a hoof. Both ponies could feel the warmth as he rested his hoof at her opening, Derpy feeling a tiny bit of relief from being touched in a not-so-rough way. "Say, you're pretty excited already."

She looked past her thighs.

"Huh?"

Thunderlane licked his hoof, happy to no longer be tasting foal powder. He then lined his body up and got into position... looking like a cat ready to pounce.

* * *

It happened so fast -- Thunderlane pulled back and then threw himself up. The stallion's barrel was suddenly in between Derpy's thighs, and he was nose-to-nose with her. Because of his weight and size she had no choice but to keep her legs wide open, which was a bit awkward. To top it off he was also holding down her front legs... in a way she didn't much mind. He kissed on the lips, a smile spreading its way across his face as he looked into her good eye.

"Oh, my...." she said. "Thundie, you're really fast. And you're really strong! Wow. Oh... Ow! Ah-ahhh-!"

Thunderlane had thrust his hips forward and this time he found his mark. The stallion let out a satisfied whinny as Derpy's forelegs shrunk to her sides, giving him ample leverage to hold them tight. Upon penetration Derpy not only immediately popped out (which felt nice) but also thought she might've urinated a little. She didn't say anything, and was sure Thunderlane didn't notice or didn't care. He began thrusting rhythmically while staring into her good eye, and she loved the look he gave her. Though his hips were quite animate, his eyes looked calm... and very pleased. But she wasn't very happy:

"Too rough!" Derpy exclaimed, biting her lower lip. "Ow! Thundie, you're hurting my legs!"

The act itself didn't hurt. It was more pleasant than uncomfortable... but it was uncomfortable at first. She felt sore, too narrow and taught for this. He thrust so hard the entire bed vibrated against the wall. This could be heard from outside, not that anypony would've likely been outside at the time.

"You'll get used to it," he said, coolly. "Trust me."

He continued to thrust, leaning in to give Derpy a kiss on the lips. Having some of the weight off her tendons helped Derpy slip into a more natural position, which happened instantaneously. No longer in distress, she shut her eyes and achknowledged that awkwardness as just an accident, accepting his kiss. She kissed him back just as hard, her cheeks turning bright crimson as his tongue forced its way into her mouth and overpowered her own. While a little rough this... this was nice.

Less than a minute had passed and Derpy's body was already starting to become accustomed to this activity. She knew it was getting easier and feeling better to accept his thrusting, and she loved the idea of having her Special Somepony closer than is usually possible. It was worth the fading twangs of discomfort on the inside. It took over a minute, but soon Derpy found accepting the thrusting so effortless that she began to squeeze each time he pushed in and pulled back. He let her know how much he liked that by giggling, rubbing her chest right down to her boobies while sitting upright. She closed her eyes as he towered above her... and he released her forelegs, and yet she still felt very secure and happy.

Each thrust brought them both pleasure. Every contraction Derpy made amplified that. Moisture and suction came into play, two things Derpy never expected to feel so wonderful; chemicals like acids and bases working together. It tickled and felt so alive. Looking into each other's eyes made her feel so close to him as he rubbed her tummy and tickled her sides.

There was an involuntary contraction now. It started as a quake, growing to a clench. Moisture grew even more concentrated (possibly a tiny bit more urination with it). Sensing it, Thunderlane started to lean forward and his thrusting became quicker, smoother. It was only logical to Derpy that he was doing this for her, to make her feel nice. There he was -- good looking, confident, and super charming -- and again he held Derpy so tight she could barely move.

"Come on," he whispered, leaning over to give her a kiss. "Come on you..."

The contractions grew and grew, harder and harder to the point it was uncomfortable again, but not painful. Quite the opposite. Derpy was too taken aback by this new, incredible sensation to even cry, as much as she wanted to. She felt an expansion inside of her and Thunderlane now leaned forward, she felt him almost pushing up against the contractions.

Vigorously thrusting while holding Derpy tight, he cried out in relief... as though he'd just got the best massage in all of Equestria. Derpy continued to feel his upward contractions, the moisture inside of her suddenly growing even more full and sticky, more complete and tickly. He fell forward on her, his whole weight almost squishing her for a moment (not that she minded). He rolled to the side, disconnecting himself in the process.

* * *

Both ponies lay panting, exhausted, feeling complete. Derpy felt the stickiness left over, coating on the inside, and Thunderlane knew he was spent. He had his eyes shut blissfully, but felt she was looking at him. He opened his eyes to see that she was.

"What?" he panted out.

"I love you, Thundie."

He nodded rapidly, continuing to pant... completely spent.

"Yeah, you too."

Both lay in the afterglow for several minutes. While she'd had a couple of wet dreams before and had got sticky down there during certain times of the month, thinking about certain stallions she really liked (both in real-life and the movies), Derpy had never done anything like that before. She knew what it was, was ready for it and submitted to it, and didn't regret choosing him for a moment. Of all the stallions she'd known, he was the cutest and the funniest... he was perfect.

"I think that was the best I've ever had," Thunderlane finally whispered, sitting up. "I mean it."

"Yeah," Derpy wheezed back, looking up. "I'm happy... It was really nice."

Thunderlane looked at her, poking her in the shoulder and smiling, and she continued to look up at him. Up and down he looked, admiring the mare who had just gave herself to him completely. There might even be a round two of this before they go to sleep, though looking at her it was not likely. He thought for a moment.

"So Derpy," Thunderlane said, finally getting back some strength. "I think you can agree that was pretty awesome, huh?"

She gave a satisfied nod.

"We're probably going to sleep now, but if we can get up early enough... I'm probably going to want to do that again." He looked around the room, sparsely decorated. "Do you have an alarm?"

She shrugged. "I always just wake up at the same time. I never really needed one."

"You wake up early, though, right?"

"Uh-huh!"

"Good." He stretched, looking into her good eye. "Lemme ask you something, lil Miss Hooves... what do you like?"

"Um... I like you, Thundie. I like you a lot!"

He laughed. "That's not quite what I meant. Now that we've been in bed, I'll let you make little requests of me because they usually lead to better... a-hem, nighttime fun. You enjoy it when I lick you down there, right?"

Sheepishly, Derpy nodded. "Uh-huh!"

"Well, Derpy... I've got something I'd you to try in the morning, and if you'd like tomorrow night we can do the same thing we did tonight. A couple times a week, if you'd like. This'll be super quick... Heck, we might even be able to do it tonight."

He looked at her, hard... waiting for a response. She looked back, also waiting for him to say something.

"What is it you want?" she finally asked.

"Well, to tell the truth, Derpy... I really like having my willy sucked, especially if it's done by a cute mare such as yourself. I like it when she, a-hem... takes what I give her and swallows it, then cuddles me afterwards. Is this something you think you could do in the morning before breakfast? You won't even have to take your diaper off. We can do it first thing and afterwards I'll treat you to breakfast. You'd like that, right?"

Derpy blushed. "Oh, my goodness!"

"It's not really a hard thing to do." He reached out and gently touched her lips, pulling her top lip down. "You just gotta make sure to keep your teeth covered and hold your tongue forward. Create a good suction and it's nearly impossible to mess up. You just suck, just like a foal does to his hoof, and it goes back as far as you're comfortable with. It's not like in the movies... that's silly. You'll know if it's working because you'll feel the skin move, and then the head will mushroom out a little towards the end."

Derpy shook her head, pulling away.

"Thundie, I- I think I'd feel kind of weird doing that. I don't wanna say embarrassed... but that's really the only word I can think of. Even talking about it makes me feel kind of funny... and gross."

He looked at her, smiling.

"Why would you feel embarrassed? I make you feel nice with my mouth. It's basically the same thing, there's just a bit more to swallow. Besides, you already took it in a different place. What's the difference?"

She looked away, shrugging... suddenly very quiet.

"Okay, Derpy." He guided her head back, encouraging her to look at him again. She did. "Maybe another time? You just gave me something pretty incredible, and maybe I'm being a tiny bit ungrateful. I'm really sorry, okay?"

She looked at him, smiling... trusting.

"That's my pretty, petite lil Derpy Hooves." He stretched, grinning coyly. "You've got... stuff all inside of you now, Derpy. You're left a lot... let's say 'muskier' than me because everything's internal. I can just wipe myself off just fine, but you... why don't you go shower, put that little thing back on your rump, then we can sleep together. Take your time, get clean. Smell nice, and while you're out I'd like a separate blanket please."

"Huh?"

"Well, Derpy..." He rolled his eyes. "It's only reasonable for me to ask, since there's a small chance you could leak and-"

"Thundie, that's only happened twice." Derpy looked down at the garments on the floor, the diaper so sturdy it was practically standing up. "These are super good, made for bed-wetting adults... it's kinda why I get them. I spend almost all my free Bits on them. Please... I wanna cuddle you without blankets so badly. Trust me!"

"Derpy?" She looked at him. He took a deep breath. "The answer is no. It's something I'm not comfortable with. We can touch, I'll even hug you, but I'm sleeping on a different side of the bed, with my own blankets, and I don't want your back legs anywhere near me. Okay?"

Derpy nodded, slowly... looking at the floor.

"Okay, Thundie. I understand."

He gave her an affectionate kiss.

"I had a lot of fun tonight, Derpy."

She looked up, smiling weakly.

"Yeah, me too."

She got up, glancing back one final time before turning to the doorway. Down the hall and to the shower... that was her destination. She noticed his eyes were fixed, not on her but on a particular spot... where she had been resting. More specifically where her rump had been. That spot on her bedspread was darker than the rest. Wet. He stared at her.

* * *

Derpy didn't mind being stared at, but when he looked at her and she saw that confident look she liked fading fast she knew what he was thinking.

"Thundie, I- um, uh..."

"Hey, it could be anything," he said, coolly. "This was your first time. There are a lot of fluids when it happens."

She nodded, watching him peel back her bedspread with a hoof.

Where that stain was her mattress was dark yellow. Even so, Thunderlane leaned forward to give it a sniff. He looked up at her, coldly... biting his lip.

"Derpy, that's fresh urine. I thought you said you usually just have this problem when you're asleep."

"That's how its always been," she said, approaching her nightstand, going into the bottom shelf. "I'll just change my sheets and everything will be o-"

"No, Derpy." Thunderlane got up, pulling her sheets back even further, seeing another stain on her mattress from years before, and another one near it closer to his side of the bed (which was just drool, but looked like it could've been pee). "Your mattress is disgusting. That's not going to be good enough. I'm not comfortable with this at all."

She looked at him, smiling weakly.

"Well, we could always turn it ov-"

"No."

She winced, taking a breath.

"Okay. I've got an air mattress... I've never slept on that."

He shook his head.

"You really should have told me about this first. We'd have done it in the bathtub!"

"I... I honestly didn't know this would happen. I'll- I'll go to the doctor on my next day off. Make sure there's nothing wrong."

"Yeah, you do that." He walked passed her. "I'm not sleeping her tonight, Derpy. I'm really going to have to think about this."

Hearing that, Derpy took a deep breath.

"But Thundie... I've never had that happen before."

He took a breath, stopping to look her in the eye. He put up a hoof.

"Okay, just tell me this... you didn't know it happened? Honestly, if you can tell me you didn't know it happened, I'll sleep on the air mattress. We'll only do it on the air mattress. You can at least keep that clean, right?"

"Well... yes, but-" She clicked her two hooves together. "Thundie, I felt something that might've been-"

The stallion gritted his teeth, stamping his hoof in anger.

"Gah, I felt it, too! Twice!" He shook his head. "Sweet Celestia, you could've said something. Derpy, you peed on me!"

Derpy lowered her head, slowly.

"Roseluck once told me it feels like you've really got to pee," she said, plainly. "Guess that's what I thought was going on. I didn't know it happened. Really! And I didn't want to stop you! I'm sorry..."

Thunderlane scowled. Derpy knew why that was, and she couldn't blame him. He gritted his teeth again, much harder than before... she was expecting him to start yelling. Instead, she saw that cool expression return to his face that she liked so much.

"Derpy," he said, very calmly. "I'm going home. Forget it. Just forget this ever happened."

He quickly turned around and began to trot briskly out of the room.

Even though Derpy wasn't completely sure what he meant, she trotted right after him. She was getting a very bad feeling about this.

"You'll see me tomorrow, though, right?"

He was already at the door and unlocking it.

"I'll see you at work."

"Um... Good night then?"

He opened her door and shut it, without looking back. She was left standing there... feeling very confused and sad. She took a breath.

I didn't mean to lie.

Suddenly it was quiet in her house. She stood there for the longest time, not thinking of anything. Normally that meant she was carefree and happy, but not this time. She wanted to cry, but couldn't. She didn't know why she wanted to cry, but she knew she just couldn't. She took a breath and shut her eyes... wanting everything to back the way it was just five minutes before. That would be nice.

Author's Note

This was one of those that made me a bit nervous because of the twist.