Accidentally slept with someone else?

Hi people.
We've been together for 5 years and I love each other, I would never cheated.
Well we've got a lot of mutual friends and last weekend a buddy of ours got married and had a party at his huge house and a lot of us stayed the weekend.
I usually don't drink because I'm always the designated driver but I wasn't driving so I had some fun.
Anyway on Sat. I had a little too much to drink and eventually decided to go back to our room and told my girlfriend that I was going to bed and she said she would be up in a few minutes too but somehow I got delayed for about a half an hour.
So I got to our room and saw she was already in bed and didn't turn the lights on but just got in bed and got close to her. I guess I was a little horny because I started playing around with her and she woke up and playing with me. But I sensed that she was drunk too.
One thing lead to another and we had some really great sex. I was thinking to myself that I guessed that it was a little different because we were both drunk and it took a lot longer too.
Well I finished inside her really deep, really hard for the third time (one oral and two in her).
We were still inside each other catching our breath when the door opens and the light turns on and I see my girlfriend standing there. She's shocked to see me there naked still inside her best friend in our bed.
I'm shocked too, she stormed out and I go after her but she didn't want to talk to me and we haven't talked for a week.
I leaned form her sister that she had told her drunk best friend to go to our room and sleep there and just forgot to tell me. I mean it would never be a problem since we've had people sleep in our bed before.
The problem is I assumed it was her since she said she was going to bed too and her friend was so drunk she just said she had to have sex and didn't even know who it was. I honestly didn't know, probably because I was very drunk and they've got a sort of similar body and it was completely dark.
What do I do?
Updates:
+1 y
One thing I would like to clear up is that I understand my girlfriend feels bad about everything and I would never have cheated on her. I would probably feel the same way if the roles were reversed and if I wanted to cheat I would have probably found another way of doing it than the worst way where my girlfriend could literally walk in on me, at least locked the door or jammed it or something if it would have been intentional and I'm not stupid enough to just do it regardless.
+1 y
Well it's a good news and bad news situation now. The good news is I was able to talk face to face with my girlfriend and we talked it all over, she understands what happened and even said she feels partly responsible for letting her friend sleep in our room without telling me. She doesn't resent me but is still hurt so we're taking things easy. She also talked to her friend and they squared things. Let's hope we can work everything out but we decided enough drinking and partying out of control
0 2

Superb Opinion

  • What was expected by your girlfriend when you and her decided to go to bed and the other girl was passed out there already? Sounds like a movie set up for a threesome. That really was your girlfriends fault. Especially her not going to the room for the time it allowed you three sessions.

Most Helpful Guy

  • I call bullshit. I cannot believe, even drunk and in the dark, that you didn't know that wasn't your girlfriend. Maybe at first, but come one? More than one round and you never thought she sounded different, acted different, looked different, felt different, smelled different than your girlfriend? I don't buy it

    • No I didn't because I was really out of it. Might have been something more than just booze which I suspect it was and they really are very, very similar at least from behind. I've made this mistake before when they were wearing the same jacket and I hugged her and then realized it wasn't here. We laughed at it that time but I honestly didn't figure out until the light turned on and saw my girlfriend standing there. Yes it felt different and I was even thinking that she was moving a little differently and loved it but I don't know I honestly was oblivious and it wasn't that different. I mean it didn't take long I think, it wasn't something like half an hour but like five, seven minutes at most or something. We never kissed because we were kind of spooning most of the time except for the brief time I was on my back and she was down. Screwed up but I honestly don't know how this screwed up situation happened and I'm not disagreeing with you. I keep asking myself how did I not know or figure it out.

Most Helpful Girl

  • You started by saying you never cheated... and then told a story about how you cheated. Your lie is a bad one. You "didn't know" "accidentally" sure dude. Sure.

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What Girls & Guys Said

2 8
  • You cannot accidentally do shit like that lol.

    take responsibility

    • I had no idea it wasn't her. I understand how she feels because I'd probably feel like that too if the role was reversed but that doesn't change the fact that I didn't figur it out until she stepped in the room. I feel like crap about the whole thing. If I had wanted to cheat wouldn't I have done it in a better way that my girlfriend would not find out?

    • So height, boob size, feel of skin, how her pussy felt, The noise she made, how her kisses felt. Even her orgasm None of that felt different

    • Guy didn't even pick a good lie.

    • Show All
  • Oops.

  • Quit drinking!

    • That's the thing, I almost never drink. But this time I did.

  • There's no such thing as "Accidentally"!

    • How could I know? My girlfriend told me she was going to bed but never told me about her friend and I never thought that it could be someone else.

    • I know full well that if I had been in that situation I would know immediately that it was not my Partner/SO.

    • I'm sorry but I had no idea. Honestly and I feel really bad about everything.

    • Show All
  • Surely if you cummed 3 times you wild have noticed at some point did she not talk

    • I didn't. I know I'm an idiot and even though during that it was really great but I never even though that it was someone else because she didn't make a sound and I didn't either. The whole thing didn't really take long and she was even more stoned than I was and I was pretty out of it. I mean I've made a mistake before when my girlfriend and her friend were wearing something similar. I came from behind and hugged her and only then realized it wasn't her. We laughed about it and we even joked that my girlfriend has a stunt double. But there's nothing funny about this situation.

  • What does the friend think

    • She told my girlfriend's sister that she felt really bad about everything and she was so stoned that she didn't realize who she was with. She tried to talk to my girlfriend but she didn't get trough but didn't want to push too much. My girlfriend's sister knows the whole story and is the only one talking to her. But she's still really hurt. I don't know what to do. I feel really bad and I'd like to explain everything to my girlfriend event though she knows everything.

    • I would understand

    • Iv been smoking up for X amount of years and nobody gets that stonned

  • Just find a new girlfriend.

  • Sounds like you were set up.

    • Set up, why? I absolutely see no reason unless my girlfriend wanted me to sleep with her friend. Which she could have done in a different way with everyone being complacent and literally not in the dark.

    • there's a million reasons you couldve been set up. Imagine what she was doing the whole time you were getting some? Imagine her "forgetting to tell you" Imagine her friend letting you fuck her that long? Have you ever been 1 upped for any reason to cover up or even up a score? I'll get tired listing shit down for you

    • Best of luck bro

  • No way u did it bruh

  • This shit can't be real.