How would you handle the situation if you found out your best friend hated your boyfriend. Not because he was a cheater or abusive, she simply thinks he's not a good/fun/friendly person. Would you tell that friend they are wrong? Would you stop talking to him/her? Would you just ignore it?
Or flip it, what would you do if you found out your boyfriend's friend thought nothing of you? Would you want your boyfriend to stand up for you? Stop talking to that friend? Or just stay out of it?
Is it really important that our friends like our lovers?