<human>: This girl and I have been sleeping together for a few months. She asked me the other day what we were and I told her I didn't want anything serious since I'm about to graduate college and move away. 

Fast forward to tonight, she's waaay too drunk and invites me to a party. I say yes, but while on the way a mutual friend tells me she's been hooking up with someone else all night. No big deal, we're not official or anything. 

I get there and we make out and whatnot, I refused to go home with her (I would refuse sex regardless since she was drunk, the going home since I was her second man of the night) and all seems well. She leaves and I move on to another girl.

Well turns out the mutual friend was drunk and told me wrong, so she never got with anyone else. And I ended up with another girl because I was too stupid/cautious to ask her. I'm sure she'll find out, I'm wondering if I can/deserve to salvage this.

Give me the gist of the text in a nutshell
<bot>: Had a semi-casual relationship, thought she was seeing other guys, I started seeing another woman, turned out I was wrong, want to salvage