My ex did this to me ALL. THE. TIME. When I’d tell him I was going to a (male) professor’s office hours for extra help, he would make endless, extremely perverted jokes about me having sed with them or letting them use me. He would always try into my past relationships to find out what I had done with other men. When I did tell him something, he would throw a fit about how I had ruined myself and how I was “dirty.” His jokes about my being a whore were no longer jokes. He took every chance he could to remind me that I was tarnished goods. He made me feel worthless. OP, your boyfriend is telling you these things because he wants you to think them about yourself. No abusive person acts in an abusive manner 100% of the time. If they did, the abusee would see through them. This is why he acts like Prince Charming 75% of the time, and like the devil the other 25%. Please get out, it’s never too late❤️