Can i leave for that?

i keep dreaming about being pregnant and how excited i am and my family is! i have dreamt like this from a young age and all i've ever wanted was to be a mum....i'm now with this guy, who is nice sometimes but does some bad things with his life but i have been with him before i knew about these issues he has, he has informed me that he never wants children and never will! this broke my heart in two! is the fact that he doesn't want kids an acceptable reason for leaving him or does that make me a bitch?????