Boyfriend keeps saying that I hate him


My boyfriend always makes comments/jokes about how I hate him and how I find him ugly all the time. Earlier in our relationship it was funny but now it’s getting annoying and I’m starting to get offended. I’ve talked to him about it several times but he won’t stop. The more he says it the more he makes me feel like I’m not being a good girlfriend even though it’s a joke. Does anyone else feel this way?