Cyber CHEATING !!

Well ive been going with my boyfriend for 9 months and to begin with it was a fantastic relationship untill he started chatting up and arrangeing to meet with a so called school friend to have a drink but then i ment mental and he said sorry THEN about a month later he started chatting up an aquantance of mines on msn but he dident know i knew her when he went on cam for her and sent her a normal picture of himself then they began to speak of a date for when he was single and he said he would give her kinky txts if she kept it a secret then she told me and he made up LIES and then this month he has been txting a random girl from near my area telling her to get her breasts out on cam and he has been phoneing her and then he keeps changing his story about the situation also he ignores me at the weekends whe hes with his friends and im scared that whilst hes ignoring me hes with another girl and he does nothing to reasure me ive finished with him but we got back and i do love him but what do i do Cry