My gf (Kylie) has a twin sister named Hailey. When I first started dating Kylie, I would get them mixed up from time to time. They even played jokes and or pranks on me, but after a month or so, I caught on. After dating Kylie for a year, we moved in together.

When Kylie said her office was having a costume party, she invited me and her sister Hailey. Kylie dressed up as a nurse and myself as a doctor. I think Hailey went as a witch. It started around 7pm, died around midnight. Kylie and I took an Uber as we were too drunk to drive. Hailey said she’d find her own way home. When we got home, I was tired and was ready to hit the sack. Kylie wasn’t too sleepy, but she was concerned about Hailey and said she was going to check on her because Hailey wasn’t answering her phone. I asked if she wanted me to come with her, but she said it was fine.

I was awoken by Kylie coming into bed around 2am. But she said, “Babe, I’m horny. Will you fuck me before going to sleep?” I was never one to say no, I just said, “Okay. Just let me get more awake.” Kylie wasted no time, as I was just starting to get up, she pulled down my shorts and started to suck my morning or evening wood? Kylie was moaning while sucking, as I stared to undress her and slightly rub her clit making her moan louder. As Kylie continued, I felt the pressure mount as I told her, “Oh, I’m about to cum!” I felt my legs tense as she just continued until I finally released my load into her mouth as she swallowed.

I felt bad for losing my erection after cumming, so I got between her legs and started to eat her pussy making her more wet. She continued moaning louder and louder, I was going to make her cum from oral just like she did to me. “Oh fuck! Right there! Yes, just like that! Keep going!…aaagghh!!” Kylie pleaded out after cumming with her legs shaking. When my erection was back, I got between her and began to fuck her raw as I knew she was on birth control. When I started fucking Kylie, I noticed it felt different but was still good so I just continue pounding away. Fucking her in multiple positions with reckless abandon like an animal. Kylie was screaming, “Oh shit! Fuck! That feels so good! Keep going! Yes just like that! Don’t stop!” I was in doggy holding her hips from behind ramming my cock into her pussy. Once I felt pressure build up, I told her I was about to cum. Kylie didn’t reply, so I just came in her pussy filling her up. After we fucked, we cuddled a bit but then decided to clean up then sleep.

It was at this point I got a good look at Kylie, and thought to myself a bit. So I decided to just throw it out and I asked, “Hailey?” She replied, “Yea, it’s me Hailey.” My stomach sank as I felt sick to my stomach. “You can’t be serious. Is this some kind of a sick joke? Are you trying to ruin my relationship with Kylie? Do you want to see us suffer?” I questioned her. Hailey had nothing to say and just shrugged. I asked Hailey, “Where is Kylie anyway?” Hailey replied, “At IHOP with some friends.” I started to get angry, “How the fuck can you be so calm about this?! Your sister is going to kill us!” I figure to come clean to Kylie and refused Hailey to leave so she can explain her side, if she has a reason. Kylie walks in….