Trust issues

It's good that he was honest and told you about his past mistakes, so it would probably be a good idea to set some boundaries in the relationship. Perhaps something like ... "If I find out in any way that you're cheating and hiding that from me, then this relationship has to end, and if you find yourself falling into those bad habits and you're at least honest with me, then we should go to couples counseling and work this out."

Hope this helps!

@sympatheticTriangle9097 My personal opinion may differ from many others. Just because you cheat on one person doesn't mean you will cheat on the next. For some people, cheating is a problem were they are always chasing that attention and excitement, for others, its more of a coincedence. Maybe he and his ex were in a really bad place, maybe he just wasn't happy anymore and felt trapped. Maybe the wrong girl just happened to pop up at the right time and he made a mistake. Whatever the case may be, happy people don't cheat. I truely believe that if your getting what you need at home you have no reason to want to go elsewhere. I would say just to put that out of your mind, I think if we're being honest, most of us at some time or the other have cheated on someone if even just in conversations. If your relationship is secure and going good I wouldn't let that worry you. Sometimes you'll really get hurt by trusting the wrong people but in a situation like that its always best to trust until they give you a reason not too, especially if you want it to work. The important part is he was honest with you about, that already shows he doesn't have any current intentions of doing it to you, if he did he wouldn't admit that to you. Best Wishes!