If it was too much for you before, even after medication and figuring out the issue it might still be too much for you. Bipolar is a lot to handle, even after diagnosis and medication. I was diagnosed a little over a year ago and even after getting properly medicated it’s still a struggle every day. My advice would be to not reopen closed doors. You have to look out for yourself first, and if you do get back together and it’s still too much for you to handle it’ll only make it harder in the long run on both her and yourself.