My best friend hates my boyfreind?

ok my propble is that my best friend hates my boyfrined she has none him longer but only seen him 2 . she hates him and im only with him a week and she is txting me and saying that i shld dump him but id dnt wanna give into her bec so far this year she has moved my birthday party 2s to suit her and shes hated evey guy that ive gone for . wat shld i do i realy love my boyfriend