Boyfriend Boundaries?

This is a very difficult situation, and i feel for you. The best thing obviously to do is to sit him down and tell him exactly how your feeling, if he knows about what happened to you in the past, then he should be aware of how you are feeling, he should reure you that they are just friends, and that is all, because us women we do need reuring sometimes, because we can be very insecure, especially if we have been hurt in the past. You need to make it clear to him that you do trust him 100% but you just need that reurance to put you mind at rest, im sure he will understand how you are feeling, you have just got to come out and tell him, other wise if you leave it, your mind could wounder, and you may start thinking the worse, and you could end up making him feel like you don't trust him. I hope you find piece of mind soon, good luck!