Can i PLZ get some help! PLZ!?

Me and my bf well ex bf was going ot for almost 3 months. me and him NEVER had any probs. but untill he went to this wedding every thing has gone down hill. His EX GF was there. so his ex gf msged me on myspace aski if me n him were goin out i said no. then she said good cus were going out. So b4 all this crazy stuff. he was acting reallyy funny with me like not him self. So i texed him today telln him what happend and he like didnt even care! He was like no its not ture blah n stuff. so i broke up with him cus he wasnt even trying to save him self with me!. SO then he txed dont leave me. Then i said im tired of ur bs. He never texed bak...So now what? i really kinda love him plz help