So i was going out with my boyfriend for over a year and he cheated on me then went out with the girl he cheated on me with for over a year. She cheated on him numerous times and they broke up. Within a few weeks he was texting me again saying how sorry he was and how much he regreted cheating on me the first time! After a few weeks we got back together. I do believe he is sorry and that he loves me because he is trying his best to show that he does. We are both a lot more mature now as well. But i just am constantly thinking that he still loves his ex and might cheat on me again with her.He knows how i feel about it i always tell him i'm scared hes going to cheat on me again and he just insists that he won't! People tell me that he now knows what it feels like to be cheated on so he won't do it again but its hard to believe!I don't want people telling me to break up with him because we do have a good relationship i just want advice on how i can stop thinking like this and how i can trust him!