He clearly does not deserve you, your relationship, or your tears. Your illness has nothing do with it, as these things can happen with or without it being in one's life unfortunately. This is HIS issue, not yours. You are worth SO much more than your relationship and how he sees you, your worth comes from within you. I can tell by your post how strong you are, keep up your courage and know that this will pass. It does not change the hurt that comes with such a betrayal and I truly understand this. So do take extra special care of yourself during this time.

It is easy to feel alone when struggling with major depression and BP, but you are not. So glad you posted. Also a therapist, counselor, and/or pdoc can be very helpful and understanding as well, even if they are not going through it themselves. They can help.

Hang in there in the meantime. Sending good wishes your way.