Yes this has happened to me,My son is now 22 and engaged and he wants nothing at all to do with his father or his family.We were divorced when my son was 2,he has only seen my son 1 other time since then,just a little word of encouragement,just tell your child that its your gain and his loss,he will need his child one day,and it may be to late!!I ask my son if he wanted to invite his dad or family when he graduated,and now that he is getting married,and he said why would I even consider it,he was never there when I was younger so why should he be a part of the most important times in my life,take the attitude,take the money and let him set it jail,what good is he doing your child out,my ex owes me 91,000.00 in back child support but money is just money,and my son is my world,hang in there!!!!