Some back story for you, I've been dating my GF for about 10 months and ever since we started going out her twin sister has been making comments about how she wants to find someone who looks exactly like me. She will smack my ass when i'm walking around the house and one time even asked me to eat her out (although she was very drunk)
Anyway, the other night all of us were out at the bar. My GF and I were just sitting at a booth drinking and chatting while her sister was on the dancefloor with some guy she found. As we're about to leave we go and ask her sister if she wants a ride home with us. She said yes and left the guy she was with.
We get home and are hanging out in my GF's room and her sister goes "fuck i wish i brought that guy home i'm really horny" to which my drunken GF replies "why doesn't he (points at me) help you out with that". I was stunned since i've never talked to my GF about this before but also really intrigued. Her sister perked up about the idea and came over to me while touching my leg. My GF was on the other side kissing my neck and getting me hard.
The two of them then pull my pants off and start giving me the most amazing two person BJ i've ever had. Both are putting in a ton of effort and my cock was soaked with spit. I was in a haze at this point and threw my GF on the bed. Tore her thong off and slid my cock inside. As i'm doing this her sister gets on her knees behind me and starts tonguing my asshole. The sensation felt amazing and i was worried i'd bust before having the chance to fuck her twin.
I stopped what i was doing and asked if they wanted to switch to which they both smiled and agreed. I bent the twin over the bed and warmed her up with my fingers on her clit. She was already dripping wet so i rammed my cock as deep as possible to see her reaction. She moaned and pushed back onto me while moving her hips up and down. Instead of my GF going to my ass she went rigbt underneath me and started sucking my balls.
I lasted a whole 5 minutes before i told them i was going to cum. I pulled out and both of them knelt on the floor while i painted their faces with my huge load.
Safe to say it was the best night of my life to date.