I guess it depends on how much in love with him you are. If your jealousy & lack of trust rule you, then perhaps you need to get it under control and not let it dominate the relationship.

Because of previous relationships, being cheated on is always in the back of my mind too. Like I expect it to happen eventually. But it doesn't mean I won't have a relationship because of it.

Best advice I can think of is the old Native American story about the 2 wolves. The one that survives is the one you feed.

OR

Watch the feet (so to speak). The feet take the body where it wants to go. If he truly loves you, he'll move himself in your direction and not give cause to make you mistrust. If by chance he's "wondering" in some other direction, then take that as the place he'd rather be.