Little background.
Been married 7 years, together for 11. We have a 10y/o boy.
Lots of friends, thought we had a great marriage, even had friends tell me how great my wife is, and that I was a lucky man. When I told them about the affair they were speechless, and said they couldn't believe it would ever happen to us (both my friends, and her friends said the same thing)
this all started about 3 years ago. He sister (whom she is very close with) had an affair with one of my friends. When I found out I got pissed, and didn't want anything to do with either of them (her sister, or my friend, both of whom were married) They finally ended it, but I was always worried about my wife hanging out with her sister from that point on. I bascially lost all respect for her (and my friend) from that point on.
My wife swore it would never to happen to us, and she was not her sister. Ok, so I thought.
My wife was fired from 3 different jobs simply for not going to work. No excuses, she just didn't want to go (I have held the same job for 12 years, and work hard to provide for my family. I take pride in my job, but not to the extent that it comes before my family. Ever. It kinda pissed me off, but I figured I would work harder to make things work, I picked up side jobs here and there to make sure our quality of life didn't change.
Ok, so in April of 2011 I found a really bad text message on her phone from someone I didn;'t know. I confronted her, and she said it was all a joke, and no big deal. Said it was a class mate (she is going back to school for a career change) She even had this azzholes name as a girl to throw me off. I guess I didn't want to believe it, so I let her talk her way out of it. Over the next few months I found more evidence, and i was convinced something was going on.
finally the day after our 7 year anniversary, I found the emails, that confirmed it. She was actually with this guy, when I called and told her I knew everything. She didn't come home for 4 hours afterwards.
this was in September. I simply lost it. I loved her with all my heart, and I was heart broken. She simply said she was sorry for hurting me, but that we didn't communicate, and that was why she did it. WTF?

She said she met him at a bar (with her sister of course) My wife hardley ever drinks, so there was no doubt in my mind that the 2 of them had 1 thing on their mind when they went out that night. (btw I was out of town working, when this happened)
The next week was complete and utter hell for me. I couldn't sleep, eat, or do anything. In the mean time she keep seeing this guy, and bascially said she wanted a divorce. I didn't but after weeks turned to months, I finally said fine, I'm done, and started moving on. I started taking a lot more pride in myself. For the first time I started putting mysefl before her, and started doing what I wanted, when I wanted, and included my son in everytthing I could.
Fast forward to the beginning of December, I have picked myself back up, and accepted the divorce, and told myself I deserve better. Then she starts showing hints of wanting to get back togehter (our divorce was just getting started) at first I wanted nothing to do with it, as I was single and ready to mingle!

The more I thought about it, I started to reconsider, and we eventually started talking more and more, and finally decided to stay together. so bascially since the middle of December we made the commitment to work it out.
I am still paranoid that something is going to happen, and she is going to end up doing it again. I have been checking emails, and phone records, and have found no evidence of her contracting this guy, or vice versa. She has made an honest effort to do the things I asked, but I am afraid its me that might not be able to get past this.
What do I do to make myself get over this? I have never been hurt like this before, I swore to myself I would never get to that dark of a place again. I am afraid I will never be able to let my gaurd down,and move on. I'm also afraid to confront my wife about this. I know its wrong,but not sure how to talk about it, or move on.