Depression

I been with my wonderful boyfriend for about 9 months now. Since the beginning of that I been living with him and his family. There's so much drama and on top of that I never feel he has my back. I have a depression problem I never talked to him about. I try to hide it as much as I can. We made a last minute choice to move out August. I'm happy that we are going but his family still gangs up on me to the point I tell him I want to kill myself. I just don't know what to say to him so he can help me :(