Diamonds are a guy's best friend

They made their way to the door, and found there a mail pony with a cross eyed expression, "Enter the mailbox now, damn letter." Said Derpy, while trying to put a letter in a closed mail box.

Shadow Walker looked at Derpy, trying not to laugh, and said, "Derpy..... Who is this letter addressed for?" The mare looked at Shadow Walker, back at the letter, and replied, "It’s for you, take it I didn't wanted to put it in the mail box anyway," she gave the letter to Shadow, "I have more letters to delivery, see you two later," she then started to fly away, not to long when she was in the air, she turned upside down, and continued to fly like this for a while.

"She is a weird pony, I don't even know how she got a job in the first place," said Diamond Tiara.

Shadow Walker examined the letter, it was from Filthy Rich, he opened it and readed it out loud, "Something came up in canterlot, as expected I won't make back home for at least another day, will take the first train tomorow night, hope you two are getting along - Signed Filthy Rich."

"So my father will be away another day?, that's better, nopony needs him anyway," Diamond Tiara replied, they both made their way in the house then, Tiara went straight to her bedroom, while Shadow Walker got to the kitchen to get something to drink.

The filly got a quill and started to write something in a piece of paper, she did her best to remember the title of a book she wanted, "I think this is right, it was there in the bookcase the last time I went to the library, I will need to send Shadow Walker to get it for me though, I can't borrow that book, and that should give me some time to prepare everything," she started to bend the paper, and went downstairs.

Shadow Walker was seated in a pillow, the filly placed the paper down and said, "Hey, Shadow Walker, I want a book from the library and guess what, you're going to get it for me, the name is written in this paper, buy you can't see it until you get the book in your hooves, or I will fire you."

Shadow Walker gave her a puzzled look, "Why can't I read the paper?" asked the stallion.

"Because I said so," The filly replied.

Shadow Walker got up, took his saddlebag and the paper, he placed the paper in and said, "Okay, just because you asked, I won't be long, but take care here Tiara, don't burn the house down while I’m away," he gave her a peek on the cheek, and in response she gave him a hit on the flank, "Just go already."

He went towards the library, greeting all his friends on the way, as he was getting near the tree house that was the library, he saw that everything was closed, but the sign on the door said open, he tried to open it with no luck, "Is anypony home," asked Shadow Walker.

"We are closed today, come back later," Said Twilight sparkle

"But the sign says that you're open, I just need a book, I won't take long," the stallion tried to persuade Twilight into letting him in.

She opened the door just a little and asked, "You promise not to tell anypony what you see here?"

"Pinkie promise," he finished, and the door opened, he was pushed inside by a burst of magic and the door slammed behind him, "Then get in fast before anypony gets wind of me."

Twilight and Shadow Walker where quite good friends, well she was friends with almost anypony.

"I don't need to tell you what is happening here, so I will cut to the chase, the answer for what you smell is yes, and the following answer for what you will ask is no, I won't do it with you." Said Twilight in a rather rushed tone.

"Well I get that smell alright, but I wouldn't ask you to go to bed with me, Twilight sometimes you're a weirdo."

"Why not?, you smelled a mare in estrus, and you don't want to buck?, that isn't how a stallions behaves in the book I readed, not that I want to buck with you for that matter." Asked Twilight, confused by the reaction of the stallion.

"I am not like those ponies from your biological books Twilight, and I already have a special somepony, look I need a book that is written here in this paper, get it for me and I will be on my way," Shadow Walker gave the paper to Twilight and said.

"By the way, if you're in estrus, you should go out and find somepony to be with you, you know find yourself a coltfriend."

"I have too much to study to think about intimate relations right now." Twilight Sparkle looked at the paper and magically grabbed the book, "Are you gay Shadow Walker?"

"WHAT, why you asked me this?, just because I don't want to buck with you, it makes me gay?" Shadow Walker was rather surprised by the sudden question.

"Let me read the title of this book aloud for you, How to please a stallion in twenty different ways, that's the book you wanted, look it's written in the paper," she magically handled the paper to the stallion.

Shadow Walker stared at the paper for some time and said, "Look, I’m not gay, it's difficult to explain but that book isn't for me, my special somepony asked for it, and demanded that I didn't knew which book it was until I got it in my hooves."

"Okay, get your book and go away please, I don't want my smell to get on you and you go around spreading it anywhere you go," she handled the book to him, and she magically transported him outside, he heard a click in the door, it was looked and the open sign had disappeared.

Shadow Walker started to go back to Diamond Tiara's house. it was getting dark, and Tiara probably had something fun for then to do, especially now with that book in his saddlebag.