Venting - cheating boyfriend

(I’m 25 weeks pregnant) So my boyfriend who I found out has been cheating on me throughout our whole relationship and half of this pregnancy told me the other night that once I get bigger he’s not having sex with me any more because he’s scared to hurt the baby.

My problem is his sex drive is high as hell ... he’s already proven he has no issue cheating ... so if he doesn’t have sex with me then ..... wtf.... and I can’t say anything to him because he just gets mad or shuts me down.