Help? Am I overreacting? I desperately need advice!?

[loudcamp585]

My fiance(?)...I question that bc I'm not sure anymore. Together 3 years, all was great until he found Facebook and twitter. I always used them to friend real friends and family to stay in touch and he'd occasionally look at mine, sometimes he wouldn't like what my friends would say and he'd ask me to delete them...no big deal or he'd complain about something I'd write so I'd delete it. But he finally got his own. I found out he was adding strange women that he didn't know...all of whom look slutty with little clothing. I told him I was uncomfortable with it, so he blocked me instead of deleting them. He would freak if I added strange men. Anyway, for the last 5 months all he has been doing is friending or following women like that, while refusing to add me. Mind you, he is NOT adding strange men...only women! He says these women are his "fitness motivation". He doesn't flirt or so he says and I have no evidence, however I KNOW he is private messaging them too because he has told me he is adding them and messaging...I think just to hurt me is why he tells me. But I also know he is anyway because he is now adding people he follows on twitter and they don't have their fb contacts posted so he has to be asking them. Now, yes I know I need to leave because he doesn't care about my feelings, I told him it hurts me bc it's like they matter more. He says to cry him a river he doesn't care. But my question is: is it ok to do what he's doing or am I overreacting?