Sorry to hear that man. I've had it happen to me, too.
She went from being the INITIATOR to not wanting to do anything at all. Eventually, she left me so that she could go "find herself" (with another guy? .
). Anyway, no matter how connected you may feel to someone, a relationship without sex cannot be strong.
All in all, it's for the better. I think you might want to consider getting out while you still can.