Annoying ass fiancé

Lately my fiancé has been such an asshole. He’s nitpicking everything I do, is always saying things like “you’re so deaf you need to go get your ears check”, “you’re so dumb how do you not know this or that”, “gosh you gotta learn to pay attention better and stop forgetting”. And he says regardless who’s there. Always saying stuff under his breath or arguing with me about this or that. Like stop! Can he ever wake up and go through the day without saying shit to me?