Help!!

Heather • First time mommy, full time barista

So my boyfriend and I have been going out for a year now and everything is great. We are expecting our first child together but there is one aspect of the relationship I feel is going to eventually be the end of us but I don't know how to bring it up to him with out him getting angry with me. I feel like my boyfriend wants nothing to do with my family and every time I mention something about seeing them I'm met with resistance and get the sense he has no interest in being a part of my family. He never says yes to anything to do with my family and it's 99% a no but yet he wants me to go to Arizona to meet his sister when we live 30 minutes from my family (CA). It's really starting to hurt me and he says I'm wrong about what I think and that it's not the case but at this point idk what to think. I don't even bother asking him to see my family any more. It's really starting to eat at me though