Damn, sorry to hear that! Depression is always tough.
I think you're a wonderful, supportive person and I agree with Beyondtherainbow that bipolar always changes.
Definitely feel free to let it all out here if you want. I know I always feel better when I write here. Lots of supportive people etc
Alsoooo... make sure to take care of yourself! I love going for walks, bike riding, kayaking, etc . I usually drag my feet, but I'm always grateful when I do any of those things. Nothing is better than fresh air! And when I can't distract myself well enough, I go to the mall or something. Social-ness helps me too