Is it ok for my boyfriend to tell me f*** you?

So whenever i accuse him of lying or anything else. I dont get mad or lash out on him. I just basically say “so you lied to me...”. But im always calm. Or whenever i get fustrated i still remain calm in everything. I just ask a whole bunch of questions to figure things out. But he gets so angry when i accuse him of something, and he says “...so actually fuck you” in EVERYTHING. Im at that point where is it even okay because he claims he gets mad whenever i accuse him of something he apparently doesn’t do?