My friends bf kept touching me??

My friends boyfriend at her birthday party kept touching my waist and butt/trying to hold my hand and taking advantage of the fact she was incoherently drunk to talk/be alone with me. I’ve been sexually assaulted in the past and him doing everything he did is so triggering for me. I felt taken advantage of, i felt he was taking advantage of the situation, and I’m so triggered and upset. I told her and she dumped him but i feel like shit. Men suck but i have 0 trust for them and they’re scary I’m so upset just venting