My bf lied

So I’ve been dating this boy a few months now and right at the start we discussed everything we had done with previous people, to get it all out in the open, and he said he had done stuff with one girl but he was a virgin. We went to a party a little while back and he was a little drunk and he told me that he had lied and he had never done anything with anyone. Then on Friday we were at another party where he was drunk and he told me that actually he had done stuff, with multiple girls, and that he wasn’t even a virgin.

I’m annoyed that lied straight to my face multiple times and it’s made me feel paranoid cause now I just feel like he’s lying about everything. And he talks about it so casually like it was funny that he lied and Idk wat I should do or say about the situation?