Looked at my wife's phone and found out she's cheating

I'm overwhelmed. Just hours ago I was a happy marriage, thinking my wife loved me more than anything. We have a 1 year old daughter and I thought we were happy. I don't even know who my wife is anymore. I'm just so hurt and lost. I can't think about anything else. <br><br>I don't know what came over me. She had left her phone in the living room where I was. I looked to see if I had a message and that's when I saw one from a guy she went to high school with, but had never met in all the time we've been together. I opened it and it was a very sexual conversation between them. He was almost giddy that her and I weren't having sex, and she was "saving it for the right guy".<br><br>I felt like I had been punched in the gut. I went through their text history and it went back about 5 months. They were planning to meet up this week while I was out of town for work but now she's "stuck" home with our daughter and he's mad that she's not making an effort to sneak off during the day to meet up. <br><br>We were on the same computer in the office when the email alert for her hotmail popped up and the subject was "the way you make me feel" so I opened it and there were the most detail, graphic emails I have ever read. All about the filthy, perverted things he wanted to do to her and things she wanted to do to him. He wanted to come in her mouth and on her face and she was totally okay with that. I'm just so confused and heartbroken. I thought we had something special.<br><br>I don't know where to go from here. Should I act like I didn't see it and get more information? How do I confront her? I'm just lost and my world is upside down.#####