My (23F) boyfriend (25M) told me if he was drunk he would “definitely hit that” when looking at my younger sisters (17F and 15F)

Ok so this is super cringy and embarrassing, but I need serious advice on this. So today I was talking with my bf, and I showed him photos of my birthday from a few weeks prior. He noticed my younger sisters in the photos and asked me “how old are they now?” I told him their ages (17 and 15) and he was like “they’re hot, but too young” <br><br>I was like yeah, they’re pretty and I hope they find a good person to be with in the future. <br><br>Then he said “yeah if I was drunk I’d definitely hit that” (referring to both of my sisters)<br><br>I immediately was like “Ew what? That’s my sisters, you shouldn’t be saying things like that, it’s weird.” <br><br>He started arguing with me saying he’s just saying it as a joke, but that it was true. He said I was being over sensitive and that I should “get a sense of humor.” I was like yeah sure whatever whatever love you, and I said the same things as before about it being weird. He said “so your sisters are off-limits? What kind of man says that?”<br><br>I was like idk, whatever.<br><br>So basically, he went back on saying he was joking, and basically admitted he was being serious but just didn’t want to make me mad. I said I’m going to tell them what he said, and he said please don’t. I was like lol no I’m going to tell them, and he was like “seriously, please don’t tell them.” I told my sisters and they both said it was creepy and weird that he said that, but I should give him another chance. I was also considering just breaking up with him, but I don’t know what to do. What do you think I should do?