Ok, there's only one person (family or otherwise) who agrees with me, that I may be bipolar. The problem is, when I get manic or severely depressed, said-person tells me to "knock it the f*** off" or "stop being a baby!"

this person is very close to me (or so I think, sometimes) and i've told them that saying things like that only makes the situation worse. But they still do it!

Ok, so my two questions are. How do I prove to other people that I do have this problem (and it won't be solved by listening to music or playing games, as my therapist suggests)? And what do I do to make my "friend" a little more compassionate?

Btw, this "friend" isn't someone I can dump, it's a bit more complicated than that.