Getting dragged into my friends breakup

To clarify, I had no involvement in their relationship, I talked to them but I wasn’t informed of a relationship and I didn’t take part in anything, I was just there and they dragged me into it. Alright so, me and this dude were friends for about a year, pretty normal. He got a girlfriend who I also happened to talk to, for a while I didn’t know they were dating. Now things were pretty alright, until I posted fan signs. This girl accused my friend of cheating on her with me but at the same time she was flirting with me. At the time, I did not know they were dating and I had no interest in either of them romantically. Me and my friend are still friends, we were never interested in each other. And I turned down his ex cuz tbh I never liked her. So she accused him of cheating on her with me while trying to cheat on him with me. And this just all unfolded at once, I didnt even do anything. I guess it doesn’t matter now, since I don’t talk to either of them anymore, I just thought the whole thing was odd.