How can I move on from the guy I loved the most? We were together and engaged for over a year, we work together and get along very well but I'm the one who has been hurt the most. He cheated and I try to move on with that but it didn't worked, now he became a player and every time I see him with a new girl it hurts me very badly, he gave me so many insecurities that now, I can't even trust my new guy (who is amazing with me). I need some desperate advice, I've never felt this way before.