I kissed a guy, and I don't know what to do.

Like the tittle says, last night I went to a party at one of my friends friends houses and long story short I kissed My friends, friends, roommate while I was there. we were both off by ourselves and and I was really drunk and it just happened. I absolutely hate myself for this right now. I am completely in the closet to my entire social circle. Friends, family, roommates, etc. This has been getting me really nervous because I don't know the guy and I don't know how out of the closet he is. Im worried he might say something to his roommates and word will travel to my roommate yada yada yada. What do I do?? I've been sitting in my room all day having mini panic attacks and i just can't stop thinking about it. Should I text him and tell him not to say anything, should I just forget about it, should I (if confronted) just deny till i die??TLDR: got black out drunk, kissed friends friends roommate, I'm very much still in the closet, and I am panicking.