<human>: This will be short but here is the jist. I was drinking with some friends last night and got plastered. I was near passing out and a girl went down on me and I fingered her.
My significant other couldn't come. We've been talking on and off for a year almost. Never officially boyfriend and girlfriend. I want to date her but she said she needs to figure out personal things.
I think I love her and feel so awful about this but i feel of I tell her it will ruin everything between us and we were doing so great recently.
I don't know what to do.

Can you condense the text into three sentences or less?
<bot>: I got drunk and hooked up with a girl behind the person who I am talking to and regret every second of it but don't know what to do because I don't want to ruin my relationship.