I think the knowledge to take away from this is that repetitively making him feel bad over his indiscretions by shaming him or making him "face the guilt of his actions" won't make you feel any better. He knows what he did, he knew it was wrong, and he knows that he hurt you.

He can't prove anything to you. All he can do is stay by your side and demonstrate whether or not he does change.

I understand that it's hard, and I would feel the same way as you if I were in your position. However, the damage is done. There's no amount of "I'm sorry"s that will help you feel better about this. It's not that you weren't worth enough, and I don't think he was lying to you about wanting to be with you. There's no healthy way to get revenge, though I do believe that you deserve the apologies and he should be open to discussing this with you.