Should I talk to my brother about his dislike toward my fiance?

So we split but got back together, we're engaged. The rest of my family are fine with it but my brother says stuff. He's like "he can go to hell" and "he's an asshole" to me and I tell him jot to say that. It makes me uncomfortable, like he had relationship problems too but I never disliked his girlfriends. I feel I should talk to him, but honestly it seems it won't help.
Should I talk to my brother about his dislike toward my fiance?
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