Why won’t my boyfriend tell his parents about me?

Darkstreax
Some background information. I’m 22 and he is 23. I moved out and live in an apartment but he still lives at home with his parents. We’ve been officially dating for over a month but have been seeing each other for almost 6 months. Every time he hangs out with me he tells his parents he’s hanging out with a friend (they assume one of his guy friends). He keeps saying he’s gonna tell them soon but never does. I wondered if his parents wouldn’t approve of me because I’m mixed (black/white) and his family is Russian but he said that wasn’t the concern and that he is just nervous cuz he’s never been in a relationship before and he has never told them about a girl before. When I go to pick him up he makes me park a block away from his house so they don’t see me. Should I be concerned that he hasn’t told them? And how much longer should I wait for him to tell them?
Why won’t my boyfriend tell his parents about me?
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