see links
You cannot have sole custody without physical custody. If your ex has physical custody, you are the non-custodial parent.
Yes, if she has sole legal custody. Not necessarily, if you have joint legal custody. Definitely not, if you have sole legal custody.
Yes, because she has SOLE custody, so you have nothing on the kid legally.
He has every right to go back to court to petition for joint custody, yes.
Maybe, but why would you want to? If the jerk doesn't have an interest in his child, I would keep him as far away as possible. Petition for sole custody instead and love and care for your child without him.
A mother is assumed to have custody. Your brother needs to immediately petition the court for his parental rights. Otherwise, she may leave the State and it will be difficult to get them back. How old are the children.
I assume that the "ex-boyfriend" is also the father of the child. If you believe that he lied to gain custody, you can file a motion/petition for a custody re-hearing and be prepared to demonstrate that he lied, and that you are a 'fit' mother to have custody of the child.
I am not sure what your saying I said my ex picked up my son while high I the mother would like to fight for sole custody as opposed to shared custody it might be hard to gain sole custody after that. i think that you could probably get visitation but i doubt sole custody unless the child's real mother does something even more stupid than that
see related question
see links below
See Link BelowChild Custody- Can Fathers Win
If you have sole custody then act immediately by calling the police. See discussion at related question link.If you have sole custody then act immediately by calling the police. See discussion at related question link.If you have sole custody then act immediately by calling the police. See discussion at related question link.If you have sole custody then act immediately by calling the police. See discussion at related question link.