Sending sex emails to other women? Sorry, but that's a dealbreaker. He isn't going to die if he doesn't have sexual stimulation for a week (& there's always his hand) so there's no excuse for him turning to the internet- I could understand if it was only sometimes, but from what you've described, it sounds like it's pretty frequent. Obviously, sex is a very sensitive issue for you, & he doesn't seem very sensitive towards what you've been thru. People don't change; at least, not that quickly, & he seems immature. You're crying yourself to sleep over this guy when he should be holding you. Even if you didn't have sexual issues, his actions are just plain disrespectful & wrong. It's actually a blessing in disguise that you found out about this before you married him. You deserve a man who will treat you better.
Sending hugs.