In Texas, if a child is 14 or older, he/she can choose to live with a grandparent as long as permission is given by the custodial parent.
yes once your 16 or older you can make your own choice but you have to confirm it with the court first
The relative has to take custody, you can't say that you want to live with them.
Yes, if the father is not given custody he will be obligated to keep paying support to whomever the court awards custody or guardianship of the children.
Yes.Yes.Yes.Yes.
Properly, yes, however there can be complications. If the mother names some other person guardianship, the father could be facing an expensive custody challenge. This issue should be clarified in the custody orders. see links below
Sole even if he was still shacking up with you
Do you have a court order saying you have visitation? Are you the biological father? If so then YES. Go back to court and file for custody.
see links below
This is a problematic area and cannot be clearly answered in that Juries can be used in Texas to decide custody. It's the only states that does.
The mother has presume sole custody and control, regardless of the circumstances in all states.
If you are not married and there is no custody or visitation order, she has custody automatically. The father have to prove paternity in court by a DNA test and then petition for custody or visitation. He can then also pay child support.
The mother has sole custody and control in all US States. see links below