As I said, I just had so much hope for him and for us
It does hurt when you're hopes didn't match up with your new reality. It takes time to go through that greiving process but you can build a new life without him.
As for his mother, as life goes on differences may come up. They may have been close with the hopes of marrying him off. (Thats why I think they were nice to me.) My MIL and I were close at first. I thought I was closer to her then my own mother. Until I seen I wasn't just like a daughter. I was her son's wife and that was all.
Best wishes for you.