Intrusive thoughts came to life

My sister & I share a friend named Anna but she’s only more recently became a friend of mine. Anna and her other friend Stacey gave Stacey’s husband John a blowjob. She is in a new relationship with a guy named Daniel who didn’t know, and is already friends with these people, particularly the husband. This happened in their talking stage, they weren’t official. I only know this because my sister told me in trust recently. The topic came up because Anna has also done this with my sister and her boyfriend a year ago. Daniel does know about that already, as Anna blurted it out to him when we were at a festival.

We were all at a house party, drinking & yes, party drugs. We all become really open and things fly out of our mouths. It gets weird. Anna’s sister and her boyfriend were there and he just grabs girls bums and the sister doesn’t seem to care, at least when we are there. He’s done it twice to me and makes me uncomfortable and I move away but avoid a scene because I’m only new and they’ve made this normal.

At some point, a few of us were standing around the kitchen counter when John (Stacey’s husband) came out and Daniel (Anna’s boyfriend) insinuated he knew. I was a bit shocked and wondered who told him. I think they had a chat & everything was fine for the rest of the night, we otherwise had a great night. The issue is that this morning I got this daunting feeling I am the one who said something. I do get a bit paranoid & make up scenarios in my head after I drink, but I remember it running across my mind.

I’m realising I’ve got some serious issues. I’m actually mortified with myself but I don’t know what steps I should make next. If I’ve messed up like this I want to at least acknowledge it and pretty much end our friendship with some amount of dignity, but then as I mentioned I can’t be sure that I said anything. Anyone’s thoughts?