I'm going to assume that OP is still lurking and give my $0.02
Lizz - If you don't think you're doing anything wrong, then you're either delusional or psychotic. You are having an emotional affair with another man. Your vows said "forsaking all others, keep myself only unto you." That means physically, emotionally, and verbally. Ask youself - if Dh found out, would he be hurt? If yes, then you're doing something you should feel guilty about. If DH had another woman on his mind night and day, a woman that he actively engaged with in a intimate manner, (albeit internet) would you feel betrayed?
I'm not saying that the married woman's mind doesn't occaisionally fantasize. But you've carried that into the real world, and you're not behaving the way a woman of character and class behaves. You feel this way because you let yourself feel this way. You indulge yourself with this man and you seek out those feeling of satisfaction with him. If you want to stop, then disconnect with him, and find yourself a therapist that can help you identify what is missing in yourself and your marriage that encourages you to act this way.
Also, when someone is doing something wrong, criticism is warranted. If you wanted a pat on the back, you should visit a swingers club. (though even they wouldn't have you since you're lying to your H)