Hi -

First, I want to commend your efforts to stay with him and try to help him work through his illness. It takes courage and love to try to fight bipolar disorder. I am sorry he has shut you out like this. I agree that sometimes isolating is part of the illness to some degree.

Before you give up on him, ask yourself: do you think he's safe? Has he been acting irrationally or extremely depressed (beyond breaking up via text). He may honestly not be in his right mind and may need intense professional help (ie: hospitalization) if he is in fact, in an extreme episode.

That being said, something you wrote is a bit concerning:

When you choose to commit to someone with bipolar disorder, this is part of the deal. Even the most treatment-compliant of us will have relapses, some of them severe. I know you are tired of people blaming things on the illness, but some things are a result of it. Should they be tolerated? No. If someone is having multiple affairs or spending a month's income in a weekend, these things have long-lasting implications and the person needs to be willing to work on stabilization, or at least set up a safety net so that these sorts of things don't happen when they are unwell.

So, once you have determined whether or not he is currently safe, you need to ask yourself some hard questions. If he were to come back to you tonight, are you willing to accept the potential roller coaster that he will be on in this life? That he will ultimately take you on with him, but that can be managed (not cured) with the right treatment? Or will you resent him every time he has an episode? He may not be handling this well now, but I think as humans in general, we deserve to have people who can accept us and support us as we are, so long as we are active partners in improving ourselves. Can you do that for him?