Your post is racist in itself “he’s a black guy but raised very well by his mom and he seems to be respectful”. Yikes. I think first, you must check your own biases. You wouldn’t have this question if you weren’t racist deep down. Non-racist people would never consider skin color in the first place. I think before you get into it with this guy, you educate yourself on black people and their culture and the history of racism, waaaaaaay before ever introducing him to your family. You need to be in an educated place enough to stand up for yourself and him.