So my main plate was out yesterday night, and wanted to come over. She came, was pretty drunk, but not too drunk so we could get to the fun stuff. After that, she starts crying and told me that she had a dream of me fucking other girls, I remain calm and the conversation went as follows:

me: it's all right, I'm here

she:(still crying) noo, it's all a lie, you're not here

me: (jokingly) alright, I'm actually not here then, I'm Billy (some friend that we both know, obviously name is not actually Billy)

she: nooo ur not, his dick is not as big as yours

me: (thinking wtf) how many of my friends have you slept with?

she: (still drunk) how many friends do you have?

I ended the conversation there, she was probably too drunk to process the conversation, she wanted to cuddle, I was a bit reluctant and we both went to sleep.

Woke up about 1 hour after and started thinking about it, and found out that I'm really uncomfortable with this situation, I usually don't mind if my plate fucks other people, it's just my turn and it's a non-exclusive relationship, I always remain non-judgmental so usually they tell me everything.

But this Billy guy was like one of our inside joke because he is pretty creepy and low smv, never imagined that she would actually fuck him, I'm pretty sure she fucked him after we started fucking, I can remember a time where she might have went home with him.

I don't know if it's because of this, I feel massively turned off, the fact that she would just give sex away to someone like that, someone we both think is creepy and low smv. What does that say about me, having sex with someone who clearly gives it away too freely.

In hindsight, I was also over-investing in this relationship, doing more couple things than usual, while knowing full on she's not LTR material. I rationalized in my head that since I'm leaving the country in less than a month that I can just be loose with these stuff, since a LTR is impossible anyways.

In the morning she wanted to have sex, I was hard, but still mentally really turned off, I told her we're going home, she said she wants sex, I said we're going home and we left.

Didn't talk at all on the way back, and that's about it.

Don't think I can continue seeing her, I know some people are going to say "it's just a plate, you are overthinking, plates fuck other people, they are not LTR, just three holes your masturbate into, have fun and shut up"

But I think I over-invested, developed some oneitis, didn't manage expectations, and for me to keep seeing her would be detrimental for my mental well-being.

What do you think, am I being petty over it? Is it something that you would be comfortable with? How should I have dealt with it?

For now, I'm going to focus on other women, lift, and continue building my career. If she comes back, text again, then I'll see how I feel about it, if I'm still not okay with it then it's a hard next.

Man, these bullshit life throws at you just never seems to end, whenever things are going well with a girl there's always something that force me to redpill up and next, the alternative would be worse though, LTRing her and spiral into betadom, I guess I need to see the bigger picture.