It isn't Cheating if it's with Her Mom, Right?

Two weeks had passed since we first had sex and Twilight Velvet and I had pretty much been doing nothing but having non-stop sex. Whenever we weren't eating or sleeping, we had been having sex. Thanks to a freaky spell she knew, my regeneration time between sessions of sex shortened significantly. That along with me not casting the spell that delayed my orgasm by six hours, I was able to fill her up many, many times. We used those spells so that she would pretty much be guaranteed that she would get pregnant.

That morning when we woke up, Velvet gave me a smile and said, "Well today is the day I'm supposed to start. If I don't, we'll have to go get a test."

I gave her a smile as I knew exactly what she was talking about. I knew that it was the day that her period was likely to begin and I was hoping so badly that it wouldn't. I was hoping so much that she would be late and would then have a positive pregnancy test. I returned the smile, "Well hopefully you'll be late!"

She gave me a kiss before heading to the restroom. I laid in bed anxiously awaiting whether she had started or not. I would be elated when I heard a yell, "I'm late!"

I gasped, "Really, you're late?"

Velvet came rushing into the bedroom and exclaimed, "Yes, I'm late! Now we need to go get a test to confirm what we both want."

The two of us joined hands and headed out the door. I was surprised though that she wanted us to walk to the grocery store instead of her driving us. Perhaps it was because she was wanting to show off to all of Canterlot that she had a younger stallion with her, that she owned a younger stallion. When we got to the grocery store I asked, "Velvet, what are we going to do if somepony asks us why we are together like this? What if they threaten to tell Night Light?"

Velvet gave me a smile, "I kind of hope they do, we'd be the focus of everypony's attention." She then began to giggle, "Just imagine if we ran into Twilight and she saw us holding hands and asked you about your absence? What would you tell her?"

This was something that didn't even cross my mind because I had been so lost in Twilight Velvet that I had completely forgot about my marefriend. I knew though that there was only one option, telling her the truth. I replied, "Well I would tell her that I belong to you now."

Velvet gave me a smile, "That is what I was hoping to hear because you do, especially if you got me pregnant, will belong to me and me alone."

I returned the smile and once we got to the grocery store, we immediately headed towards the pharmacy where the pregnancy tests were. We were looking at them and Velvet noticed one that was much more costly than the others but was 99.99% accurate. She grabbed it and suggested, "What do you say we get this, go home and then find out what our futures are." She winked and added, "Hopefully it will result in me divorcing Night Light and marrying you!"

I returned the smile, "I certainly hope so!"

We then headed to the checkout stand and right in front of us was my marefriend, well more like ex-marefriend at this point. She saw us and her jaw dropped open. She took in everything she saw and gasped, "Night Sky, why are you and my mom holding hands?" She then saw what Velvet had and continued, "And mom, why are you buying a........" her mood shifted and she became angry, "have you been having sex with my stallionfriend?"

Both of us had sheepish grins on our faces as Twilight became angrier, "You have, haven't you mom?" She then turned to me and snapped, "So how long have you been bucking my mom?"

I replied, "Well, you see....."

Velvet cut me off, "Twilight, it all started a month ago when he stared at my tits in this very checkout line! Well I took him home with me, he satisfied my fetishes for the first two weeks and then we've been having sex for two weeks non-stop and oh my goodness, he is so good!"

Twilight got up in her mother's face and yelled, "So are you going to divorce dad and hook up with my ex-stallionfriend?"

Velvet had a huge smile on her face as she replied, "I am. I have many fetishes and unlike your father, he takes part in them with me." She began to giggle, "You know what, he even let me mark him with my period....."

Twilight had a mad fury in her eyes by this point as she yelled, "You know what mom, I don't want to hear it and Night Sky, we're finished. You can go be with my disgusting mom!"

Twilight then got to the front of the line and went silent. Velvet and I put our arms around one another and gave each other nervous smiles. Once she finished paying for her stuff she looked back and snapped, "I never thought you were like this mom. I thought you were loyal to dad but instead you're a filthy seductress who stole Night Sky away from me." She then turned to me and added, "And when my mom gets old and unattractive, don't come running back to me."

Twilight stormed off and Velvet commented, "Oh don't worry stud, the mares in my family age very gracefully and I'm sure I could con Celestia to cast longevity spells on us, both of us!"

I asked, "Seriously?"

She giggled, "Seriously. All she'd expect is a threesome with us and we could continue to live our wonderful lives for thousands of years!"

I gave her a smile as we headed up to pay for the pregnancy test. As Velvet was paying for it the clerk glared at us and asked, "Velvet, aren't you supposed to be married to Night Light?"

Velvet laughed, "Unfortunately yes but soon it will be Night Sky here, the best lover I've ever had!"

The clerk glared at us as we headed towards the exit to return home. Once we left the store Velvet became more excited, "Oh I can't wait to take this. I hope it is positive so bad!"

I agreed, "I hope it is positive too. A lifetime with you will be a dream come true!"

Once we got back home Velvet rushed to the bathroom and ordered, "Come with me Night Sky, I want us to be together when we find out!"

She got sat down on the toilet and added, "Hold it for me so we can do this, it will be more intimate like this."

I did as she wanted and she peed on the test strip. The following minute seemed to last forever but we finally got that "+" sign. She leaped up off the toilet and into my arms. She exclaimed, "We're pregnant sweetie, we're pregnant!"

I gave her a kiss, "Oh I'm so happy Velvet, I'm so happy!"

She gave me a seductive smile, "Just think, you'll get to buck a pregnant mare and once I have our foal, I'll give it formula and you can be the one to breastfeed off of me!"

Having sex with her while she was pregnant and breastfeeding off of her was another fantasy I had been having involving her for quite some time. I gave her a smile, "I'm looking forward to that Velvet, I know your milk will be the sweetest thing ever."

She grabbed me by the hand, led me into the bedroom and ordered, "Now undress, we're going to celebrate!" She paused before adding, "But now that I'm pregnant, I'm going to be on top and I will dominate you like you've never been dominated before."

I gave her a smile, "I wouldn't want it any other way!"