Before I begin this let me say I have entirely fucked it, I attempted to bite off more than I could chew and my BP tendencies came back to bite me in the ass.

I’ll try keep it quick, at uni and started hooking up with a girl (with major red flags) that lives in the same house (around 25 of us). Told her that I only wanted to have sex and didn’t want anything exclusive, she didn’t and we fought a couple times but she ended up being okay with it.

However I got comfortable and stopped talking to other chicks (found it too difficult when she was always at home) so I developed oneitis for her, I realised (got upset when she hooked up with other people) and decided I’d end things and broke it off with her and pulled someone else the night before.

Next day I got extremely drunk and she kept trying to talk to me, I was drunk as fuck and was showing big BP errors (saying I was scared to see her pull/fuck other people) and eventually said we could be exclusive until end of uni (November) and we’d go back to our different homes and get over each other (living separately next year).

However, today all her friends have been telling me congratulations and saying how they knew we’d get together and it’s become apparent to me that she must think we’re full on at the start of a relationship (one that I will not have, she’s toxic and a pathological liar). I’m a bit lost at what to do, right now I think I just go with it until the end of uni and tell that we should have separate over the holiday/lose contact with her. Any advice would be appreciated

Edit: I want to add that I’ve got a shitload to do with my studies so I don’t want to have her/all our roommates in a fucking war over this, I’m looking for a combination of the right way to do things and in a way that won’t fuck up my university.