<human>: We've been married for a year and a half. It's a great marriage, very affectionate, we have the same life goals and so forth, the envy of our friends. 

She's friendly with this guy whom she dated for one month when she was 14. The other night he said he had feelings for her. They talked, they cried, they said it was bad timing what with her being married and all. 

Apparently she had a huge crush on him for a long time after they broke up, so having him reciprocate was a dream come true for her teenage self. She completely went to pieces thinking about what might have been. 

Now she says that she's scared she might have married me out of convenience, and because I'm so supportive and steadfast. She says having him caress her back was more exciting than any time that I touched her. She's gone to sleep at a friend's house for a few days to think things through. 

Some more context (feel free to skip, although it is kinda juicy):

- we have an open marriage. We've both slept with other people before with minimal effect on our relationship (mostly her, though - it's easier for girls to find a fling, and she's better looking). So she could have had a non-serious thing with this guy, I wouldn't even have been upset. But what she wants is the fairytale dream from age 14. 

- she's diagnosed bipolar. We've had a rough time since we got married. She tried to kill herself twice (serious attempts, hospitalization each time). She's on four different medications. I've been her faithful support. (Maybe we're not actually the envy of our friends...) 

- Since this ex-boyfriend thing happened (three days ago), she's barely eaten at all. Her psychologist says it's self-harm. I think maybe she's punishing herself for thinking badly of me and of our marriage. 

I don't really even know what advice I want. Do you think she's coming back? Is there anything I can do?

Can you provide a brief overview of the text?
<bot>: my wife is thinking of leaving me because I don't excite her the way she was excited about her crush at age 14.