Scooterbug did give you some good advice. i just wanted to add that your wife needs to be held accountable. Just because she has bipolar doesnt excuse her actions. It doesnt give her carte blanche to hurt you by having emotional relationships with other people. Your feelings count here and you have to take them into consideration when you are contemplating the future. You dont state whether she is on meds or in therapy or not. If she is and still exhibiting these behaviors then there may be something else going on in the relationship as scooterbug suggests. If she isnt on meds or in therapy, this may be worth the suggestion to her before you consider dissolving the relationship