Unfair or no

I'm 15 about to be 16 but my family doesn't like my boyfriend because he's pretty chubby and by their standards doesn't look good. I mean he has such a wonderful personality and was my best friend for years and I personally think he looks attractive. Is it me? Or should I just ignore them? They say I'm a cheer leader and I shouldn't be with people like that. And it really hurts.