Cheating hurts. It sounds like you love him but the paranoia means you don't fully trust him anymore, and that is a normal reaction. That being said..i don't think there is anything you can do more then you have already done to get over it. I mean it's just as simple as him having to earn your trust back..that requires actions from him...not you. You have done your part by saying i will give you another chance if you stay on medication. His part is staying on the medication...and earning your trust.