Any Married Bi guys? Help!?

If you think about it, he's not totally behind your back. He's communicating with guys in an open way (you can read his email). Try telling him that you read some of his mail and thought it was hot. Tell him you'd love to see him go down on a guy. You might even masturbate while you watch. Help him be more honest by embracing his desire. For guys, cheating for only is not an emotionally binding thing. He still loves you and will not leave you for a guy, or girl. I think girls/women have a hard time understanding that. Good luck!