I've a very good saying for this..
No matter how many times a snake sheds its skin, it will always be a snake
nah, he'd already experienced that kind of thrill, so he might think it wouldn't be so bad to do it again, as long as his girlfriend didn't find out.
It probably won't work out. Relationships are built on trust and you would forever have the thought that he's still cheating in the back of your mind.
hell neow. i'd rather live alone for the rest of my life than to be in a relationship where i constantly have a reoccurring anxiety of him probably doing it again.
Leave this guy, for your own sake.
Would you every go back to a guy who cheated on you but already made an effort that he changed and is better than before