Last weekend I got really drunk with my friends and roommates (I invited my girlfriend, but she wanted to get up early the next day so she declined). There was this girl there and one drink led to another, and we wound up having incoherent, drunken sex. When I sobered up, I felt genuinely terrible about the whole thing. 

Here's the thing, I don't know if I should tell my girlfriend about what happened. After all, I was so drunk I can barely recall the details. To make matters more complicated, we had a discussion in the past about how open or exclusive our relationship should be (she was out of state for the summer). What she said was "I like you a lot, but I won't stop you from seeing anyone else. If that's what you want, then go ahead." Granted, this was in the context of her time away, but the tone of it still has me feeling all uncertain of how to approach this. On the one hand, we are exclusive, so this is definitely a breach of that. On the other hand, she's okay with threesomes. 

I'm just not sure if I should tell her or not. If I tell her, I don't know how much it will bother her. On the other hand, if I don't tell her and she somehow finds out, I'm sure that would be far worse for our relationship.
user
I got drunk with my friends and roommates, and had sex with
assistant
Last weekend I got really drunk with my friends and roommates (I invited my girlfriend, but she wanted to get up early the next day so she declined). There was this girl there and one drink led to another, and we wound up having incoherent, drunken sex. When I sobered up, I felt genuinely terrible about the whole thing. 

Here's the thing, I don't know if I should tell my girlfriend about what happened. After all, I was so drunk I can barely recall the details. To make matters more complicated, we had a discussion in the past about how open or exclusive our relationship should be (she was out of state for the summer). What she said was "I like you a lot, but I won't stop you from seeing anyone else. If that's what you want, then go ahead." Granted, this was in the context of her time away, but the tone of it still has me feeling all uncertain of how to approach this. On the one hand, we are exclusive, so this is definitely a breach of that. On the other hand, she's okay with threesomes. 

I'm just not sure if I should tell her or not. If I tell her, I don't know how much it will bother her. On the other hand, if I don't tell her and she somehow finds out, I'm sure that would be far worse for our relationship.
user
I made a mistake and got drunk. Do I tell my girlfriend
assistant