Bipolar Depression

My wife of 10 years has moved out after what appears to be a manic episode that started in the summer. We have three little boys. The youngest just turned one.

She meets all the symptoms (had an affair a couple yrs ago as well), and has recently been destructive again...got a tattoo all the sudden and went and met an old classmate/boyfriend in her hometown in secret. She's also been talking to the guy she had an affair with, overdrawing the bank account, lying constantly, and getting hostile toward me for things like looking at the phone records (proving who SHE has talked too...proving that SHE lied).

She has now moved out, and started talking more religious talk, and I saw that in her browser history she searched on the internet "why has my libido increased?", and her sleep is also changed.. We have separate accounts now, but I noticed her's is over $1000 overdrawn , and she does not seem worried about it..

Her family and I agree she needs help, but she chews anyone out who tries to diagnose her. They keep saying she will come down soon..

She has been taking Lexapro for over a year now, and mentioned back in the summer that "it is not working anymore", so I'm thinking she's not really depressed, but she continues to take it.

What would happen to someone who is manic that continues to take an antidepressant only? Will they ever 'crash'?

I don't know if I should wait around or move on for the kids sake..

It's all over the medical literature that Lexapro can cause mania in BP people. What your wife needs, if she is indeed BP, is a mood stabilizer, not merely an antidepressant. Just do a google search putting Lexapro and mania (or manic or bipolar) in the search box and you will find gobs of info on this. The medical professional who prescribed the Lexapro probably didn't suspect she was BP - from everything I've read, it sometimes takes 20 years to correctly diagnose. Good luck.