I do know a lot of people like that, who front well but are real bastards behind closed doors. Children are surprisingly insightful, though. Every kid usually figures out the real deal before adulthood. I know it is hard but there is still hope for the future. Just keep doing the right thing.
You are right about children. Even when I look back at myself, never believing any of the stuff I was told about religion etc. Thinking in my head it was nonsense but not having the courage to step up and say it. I remember thinking when I grew up I'd leave Islam. I thought well as long as I am at home I will have to follow what they want, but they can't stop me after.
I am very disappointed at everyone who has stuck by him though. They are hearing the truth, that he's stopped me seeing her, and they still don't care. He's probably lying to them saying it was all me, and like idiots they have believed him. I have now cut off any of his in laws I had on my Facebook etc so I don't know what he has told them.