Wifes "FRIEND" and her text provacative messages.....

My wife of 3 years has a "friend" that she used to do everything with before we were married. She told me there was never any "attraction" from her to him, yet they went everywhere together, slept in the same hotel room bed, etc.

In any case, my understanding was this was nothing more than that, a "friend" relationship. I went camping for the weekend a month ago, and upon returning, walked in the house and her phone was vibrating....so thinking nothing of it I picked it up and it was a text message.

We have always had a thing where we will tell the other whos texting, and she said "what did he say?" The text message I read....was I miss you from him.

Well for some reason.....I scrolled down....there were a ton of texts from and to him and her. For instance....."I'm laying here now wishing you were here in my arms, thinking about you" "Cant wait", etc. hers were "that would be nice" "me too".

Okay big time alarm bells....I went online and looked up our cell phone records....570 texts between them in one and one half week, phone records show that they talked and text up to a certain time on the saturday i was gone.....and then for 6 hours nothing......and then right back at it constantly...

I confronted her, she said it was HIM that wanted her, showing his feelings and she was telling him its not proper and would have no more contact with him.....well the other day I checked again...they still do, and now a secret email account.

Is she cheating? What would you do?