BOYFRIEND WONT LET ME MEET HIS FAMILY !!

So me and my boyfriend have been dating for 8 months and he's met my mom and my brother lives with us. He won't let me meet his family or anything I mean I met his brother but we're the same age and he goes to our house.

I don't get why he won't let me meet the rest of his family he'll take me to church with him and everything but when it comes to me meeting his family he has to go alone or it's to late or something always comes up.

Is he embarrassed of me ? Or something?

I don't get it and if I bring it up he changes the topic what should I do!!