Re: nikah validity..
Marriage is full of challenges that require BOTH people to communicate and compromise in order to be happy. The fact that this guy is so immature and prefers to cut you off out of his life rather than talk and try to solve the problem is beyond ridiculous. Keep in mind that thanks to the nikah…by all means you are his wife!
The idea of building a life (kids and all) with someone so immature and selfish would terrify me. 