Only Justin himself can answer this question.
Justin Bieber doesnt have a sister, he is a only child.
Only he himself and his family will know.
No he doesnt he only cares about his boyfriends
Justin Bieber would never call anyone dumb, and he wouldn't care how smart you are, he would only care what personality you have and your sense of humour.
no he has a sister named jazmyn he only gets to see her every few months
he might sing his album my world 2.0 he might. the only person that knows is Justin bieber himself!
non other only then his mom the doctors and himself.
Justin Bieber's sister is only 4
1 the one and only talented Justin Bieber if you have seen her with more those are Justin Bieber's half sisters & half brothers
Only when he was in diapers. He doesent now. As far as the press knows.
Honestly the only one who can really answer this is Justin Bieber himself, but anyone who bases whether they would go out with you or not on the color of your skin (in my opinion) is very shallow and not worth your time.