am I wrong??

This maybe isn’t a “who’s right and who’s wrong” scenario but I’m wondering if my feelings are justified..

My SO and I have been together for a few years, had our ups and downs like other relationships but ultimately very healthy and recently there has been no issues. But today out of nowhere he tells me that other people are telling him that I was with another guy at this party. As like, I cheated on him with another guy.

This party was also four months ago.. and I don’t go out often but decided to go to this Halloween party with my group of girl friends. Mind you, I drank but I was only tipsy.. I have full recollection of the entire night. I was with the same girls all night and one of my friends was sober because she was DD. So I got confused why people would say these things about me. I’ve never given him any reason to believe I would. But basically we’re talking it out and he refuses to tell me who keeps saying this stuff about me... it’s bothering me.

I know the truth, he says he believes me but the main reason why I want to know who these people are, is because he’s saying I know them. Hinting they may be friends of mine or people from my high school years... I don’t want to start more problems but if these are people that are suppose to be my “friends” or people I haven’t talked to in years... I don’t want them in my life. But he refuses to tell me.

Would this bother anyone else? Are my feelings justified?? Please be honest and leave any advice you have.

*for the sake of staying anonymous I’ll update this post if anyone has questions or anything! Thanks ladies*