I don't know how you determine that he is a good person but good men don't sleep around while married. Just please stop listening to his stories. Since he lied about not sleeping with his wife, he lied about her cheating on him. He is just a liar. And I hope you checked for STD. I wouldn't trust that he didn't sleep with more people than you, men like that usually do, but even if just his wife who knows what she might have. It's dangerous to share sexual partners. Please see a doctor.

Do some grieving and healing and you'll do well. Break ups are hard but you will manage it. Just please don't play friends with this man. You are worthy way way more than this lying and cheating sleezeball. You deserve way better