Most Helpful Guy
How was he in the relationship? If you know him very well do you think he is the type of person who would do such a thing so that he can't hurt you further? And if what he said was true and just had a kissing session with an ex? Did it cross your borderline or will giving him another chance be okay to you? If you do give him a chance but are still confused about doing so just tell him he's gonna have to start from zero again and you guys can't just pick from where you left off.
Most Helpful Girl
He's lucky if you're nice enough to talk to him, forgot dating! He's a liar and a cheater, run!