(john tucker must die) my story is the same what should i do?

you all know john tucker must die movie . my story is the same. their is that guy who always dates girls and then breaks up with them after not long time and he dates more than one girl at the same time. he is known as the hot,famous and cool guy he's also basket ball player he just dated 3 of my closest friends then he brook up with them from the first week. we all are cheerleaders and he dated every single cheerleader i joined the cheerleader team so my friends wanted me to make him fall in love with me then break his heart i don't know why i said yes although that i didn't like him but i did it he really fall in love with me and it was so strange how he didn't date anyone else and he asked me to be his gf and that's something he never ever did with anyone through his dating history everyone was shocked how romantic he was and how he really changed actually i fall in love with him too and it was so clear that he really changed so my friends told me that i should stop the heartbreaking game and just complete with him normally and that's what i did. i found out that he is the best guy that i could ever be with actually he is me dream guy. we are been going out for along time and everyday he try to prove to me that his love for me is so true and that what bothers me i wanted to tell him the truth but i couldn't I'm afraid that he well hate and breakup with me so what should i do tell him or what and what well be his Reaction after i tell him the truth??? please help