Some guys tells about others girls they are pretty in front of the girlfriend?

I was in a Mall with my Boyfriend and he told me he saw a very beautiful and sexy woman and someone like her will be never with him .
I start to complain about that and told him that's not very appropriate to say. And he's answer was :" you're very obssest about your Boys Band too you know? It's the same thing "
Like how is it the same thing? Its just a Band who I listen to, I don't have pictures with them in the phone, posters, or anything. He just know I listen sometimes.

I was in a Mall with my Boyfriend and he told me he saw a very beautiful and sexy woman and someone like her will be never with him .
I start to complain about that and told him that's not very appropriate to say. And he's answer was :" you're very obssest about your Boys Band too you know? It's the same thing "
Like how is it the same thing? Its just a Band who I listen to, I don't have pictures with them in the phone, posters, or anything. He just know I listen sometimes.

I mean, I was (rather arrogantly) told that Brits are “just different than Americans” when it comes to relationships; any passive-aggressive remark to your partner is brushed off as British banter and insults are seemingly part of the love language.

But this can’t be acceptable or normal anywhere under any context. On top of being a jerk, he is truly an idiot - who would honestly tell their partner how sexy was the girl they just saw and then compare that to being a fan of a music band? Like him being such an idiot alone should be a reason to break up with him.