what should I do??

ok so me and my current boyfriend have been dating for almost a year and I recently hacked into his myspace and found out he had got naked pictures from some girl a few months ago but he denys sending any to her although that was the deal they made and we broke up for like a day then I got back with him because I love him so much!! but he is always flirting with girls on there now I made a false myspace account and I am asking him for nude pictures of himself and I think he is going for it =[ I don’t know what to do this is cheating!!! but love him so much and never want to loose him PLEASE HELP ME!!