LL and CC books about being free from the past

I want to find a LL and CC book about a male MC starting a new life somewhere new after doing bad things in their past. Particularly the MC was in love with someone and that someone did bad things to people especially to the MC’s friends and the MC enabled it and soon the MC’s friends turn against the MC and he finally realised what he did wrong. And that’s when he broke up with his girlfriend and moved away to start new life.

I know this is a lot but I would like to try to find something like this. It already happened in The Last Goodbye but with a female MC. But I would like to try to find one with a male MC. So if anyone knows any, please let me know. Thanks.