Started with him trying to get me to not wear make up and comparing me to an ex who didn't wear any - but he didn't have much good to say about her overall, except to try to make me feel jealous.
One night when we were walking home from the pub and arguing about something he shoved me, didn't hurt me, but gave me a start. Should have ended it right there. Complimented my friend's looks in front of me - just keep that shit t yourself mate, I knew what he was doing, trying to neg me and just ignored it.
It all ended with him trying to strangle me. I never gave in to any of his attempted coercion, and would always argue back - the night he choked me I had shouted back at hiim after he shouted at me then walked away and slammed a door in my face, we were home alone at his dad's house as his dad was away on holiday.
That was, obviously, the last night I ever spent with him, I was young and stupid, but not THAT stupid. I honestly have NO IDEA why I put up with him as long as I did, it was like 8 months. Absolute waste of time and effort.
But I learned and have never let anyone treat me like that again.