Welcome to HealingWell. I hope you can find some community and advice here.
It sounds like you are going through a very painful and confusing time right now. Is your wife seeing her psychiatrist right now? Her doctor must know that she's having a very acute manic phase and that your marriage is in danger. Unfortunately this is fairly common with bipolar. If you can hange on, you will be amazing. Of course, be safe if she is sleeping with strange men.
The hard part to digest is that while her decisions are influenced by the disorder, she is still aware of what she is doing and she is still making her own decisions. There is a part of her that could stop if she wanted to. Keep that in mind, because if she will not follow through with her medical treatment and /or won't come home, you need to take care of your son and yourself first. She is responsible for herself. You can only help her in so much that you can try to influence her decisions, try and convince her to see her doctors and follow her treatments and stick to her medications. If she won't do those things, you don't have a lot of options, I'm sorry to say.
Co-Moderator, Bipolar Forum