Am I a bad person?

I feel so so bad I've been with my so for 7 months and next year were getting married but last weekend it was his birthday and all his mates came round we all got very drunk and all I wanted was his best mate to kiss me or do something. I feel so bad my so was ignoring me through the whole night he became verbally aggressive when I was trying to get him to drink water before going to bed he threatened to spit at me and called me a bitch and many other horrible things telling me to fuck off when I was trying to get him into bed he gave me an hours lecture on if I ever cheated he'd break my nose and make my life living hell just before he passed out. I stayed calm but all I could think about was not wanting him but wanting his best friend this has never happened before and I feel so bad please help