Insight please

My bipolar ex partner dumped me saying our relationship is to stressful I did everything I could to please him nothing pleased him. He has been wanting to kill himself three times in a month. He left me for a woman he has known for two days. Two weeks before this he wanted to get married. Now he is so cold hearted towards me and angry. He is also irrational and has shown signs he is mania. He is on anti depressants the same ones for over ten years. He has also been very confused and unable to answer a simple question, he will just keep telling me the one thing that is on his mind. What has happened? is this mania? is he thinking straight, he has also shown signs he wants me back. Wants to stay friends then he hates me. He lied to this woman about our breakup he told me. He also said he can't cuddle me because he will want to sleep with me. Any advice?

I'm sorry you are going through this terrible time - I do have an understanding of what you are going through, as I went through something similar (Except we were BOTH BP!)
I'm concerned you say he's on an anti-depressant; is he on a mood stabiliser too?
Else it is quite possible that the anti-dep has pushed him in to mania. Not sure how to explain the fact that he was OK for 10 years, but maybe something triggered him.
He should go and see his pdoc to review his meds - urgently

When he's manic, it could be quite possible that he does things that are totally out of character; and he sounds like he's not really in touch with his reality any more

Welcome nutzey. I'm sorry you're going through this. Does he have a friend or family member that you can let know what's going on, so they can keep an eye on him? My suggestion is to keep your distance from him. It sounds like he's not in a good place and hopefully he decides to get professional help, but that doesn't mean you need to be his door mat while he tries to figure things out. Please take care of yourself

Great advice already. And even if you are able to determine if he's in a manic phase (which no one but a professional can say and even they get confused sometimes), he is the one that will have to get help.

Even being bipolar, he isn't excused from being accountable for his actions, and you definitely don't have to put up with it.

I think a good way to gauge if you want to continue this relationship is to ask: If you were involved with a mentally healthy man would you put up with him leaving and coming back (physically and/or emotionally) as if you are a revolving door? Would you put up with cold-hearted and irrationally angry? Would you put up with a man who says he hates you, and (correct me if I'm wrong) doesn't want to have sex with you?

It's a terrible, awful, painful thing to get dumped, no doubt about it. But maybe down the road, when you have a relationship with someone who is able to love you, you will be grateful for it. Lots of hugs til then...