I'm scared he might cheat on me

You know that he might, and that if he does you are strong enough to survive and go on.

What does HE do that makes you so afraid?

If there are no reasons, then you have a problem with trusting men and should deal with this before becoming serious about any man. You will drive any guy away with your unfounded jealousy if you don't find out what's behind this fear.

He already cheated on you. I caught he and my wife in bed together last night. But don't worry, you won't be hearing from either of them anytime soon.

By the way, are you doing anything this weekend? Looks like my calendar just opened up.