loopus

my wife has been diagnosed with depression and has been on meds for as long as I remember. recently things seemed worse and I found myself digging into her private life. I uncovered she has been calling a guy (almost daily) that I know she has been intimate with in the past and has even met him out for coffee (or so she says). I confronted her with this and she denied it until I showed her the proof. she got very upset and was crying, eventually I told her that I don't think I could forgive her or that we could be together anymore (it's been 10 years). she took a handfull of pills and I had to call 911. she is in the psych ward now. I met wioth the doctors and they indicated that they think she was misdiagnosed and is really bipolar and changed her meds to something that addresses this condition. they explained what people with bopolar do and it sounds just like my wife. She keeps crying and wanting me to take her back, she has not blamed her actions on her condition, she just says she doesn't know why she did it, and still denies having an affair, but admits to seeing him and calling him.
I have loved this woman more than I can express. I do not know how to feel, she acts like she loves me but I have lost all faith in what the truth is or might be. I don't know what to do and don't have anybody to talk to about this. can anybody help me?