Most Helpful Guy
Never admit to it... that's the biggest mistake anyone can make. Who cares if u lie just don't reveal it and no one gets hurt. But since you did your gonna have to try and get him back with whatever you caught him with in the first place. He loves you for you so don't change just show him you can be honest.
Most Helpful Girl
If the other guy was so great and everything you longed for, then why didn't you actually do some research and asked around if he was a player? Until you can learn to be completely faithful and comitted to another person from the start, then I'm sorry, you shouldn't be in a relationship.