I'm so sorry. Do you want him to take custody of the kids? I understand if you do, but if you don't, then don't let him use your BP1 dx against you. When I divorced my first husband, he insisted I was unstable and that he could use it against me in court. My lawyers fiance just happened to be Bipolar. Her ex-husband had tried the same thing. She was stable on meds, and it didn't hold up in court. The judge still gave her the kids. My lawyer told me that if I wanted custody to fight, that I would most likely win. In the end once I refused to cave he backed off.
Hang in there Elicia, maybe he's just feeling overwhelmed. He may feel differently soon.
Good judgement comes from experience and alot of that comes from bad judgement.
You just have to accept that some days you're the pigeon, and some days you're the statue.