Any Dad's out there to answer - My ex wife turned my son against me?

I have two sons under the same type of situation you speak of. It sounds like its a lost cause to dwell on what has been done and you can't do much about it now. Some day, when he is not a teenager, you might get a chance to show your side of the story to him. It sucks that you lost that one, I know the feeling......but maybe when he is older and the mother doesn't have the same influence in his life he will come around. Meanwhile, be happy with the one you have at home...I didn't get that.