well.. i would suggest that u leave him... or just tell him that "we need a period of time to cool down...n think over again whether we should continue or not.".... or start investigating.

i dont really trust 100% what guys said .. thats what my bad experience tells me... my ex cheated on me 2... at 1st i felt smtg wrong, then i start investigating.... half way i know he done something wrong d.. every1 ask me to stop checking n just leave him. but i still wana investigate the whole story, at the end.... i hurt myself.... when i finally know the whole lies.... Anyway, the decision of start checking him is right, because that time i cant just pretend ntg happen, investigating would let me feel better cuz if he really is "clean" then i will feel relief. but if he really cheat on me... its over. if i dont check what is really happening, i will regret.

Anyway, different people different case. U know him better. so... follow ur heart... & never ever regret on decision u've made. Good Luck to u gal~ and stay hppy n pretty always... muakss