I have twin girls that are 4 months old. Their father that I have been friends with for 10 years is threating to sign his rights away on them so he doesn't have to pay me child support. He has 4 other children with 2 different girls. I honestly don't care if he signs his rights away because I can't force him to be a father to my girls. I was wondering if he does sign his rights away will the child support office make him pay me back child support?