you can change him real quick if you leave him and he realises that he cant be without you. one of my first boyfriends was a big time player. his mates all told me he was fucking me around and it didnt even cross my mind that it could be true. after him, i became a player. really. it took one person telling me the truth about my behaviour around the opposite sex and then leaving my side to make me realise that i was fucked.