Cheated after 2 1/2 years

I left my boyfriend this morning after 2 1/2 years of a what I thought was a happy healthy relationship. I’m really struggling to understand the stuff I saw, I saw things on his phone after he wrestled (& yes I mean WRESTLED) me to not look at his phone (btw I never have looked at his phone) but there was LOADS of pictures of girls he knew, a girl from my home town, a few random girls that he admitted he pleasured himself to. I struggle with this due to the feeling that there was nothing wrong with the sexual side of our relationship, maybe sometimes too much. I’m so confused with the person I started to go out with as he’s lied and betrayed my trust and I’m struggling to move on. I’ve also been a credit to him, I’ve done everything and more for this boy, he was always affectionate to me in public and openly l, he spoke to me about how he’d never do anything like this, I think he has an addiction, if he gets help am I foolish to consider getting back with him?