I live in PA and pay child support which is taken directly out of my paycheck. My question is, Am i responsible for paying for a extra curricular activities that occur when it is my vacation week and I have physical custody of my child. My ex feels the need to tell me all of "her" expenses for the child, and tells me that i can pay for it. If i am responsible, I will gladly pay. But want to be sure, so the bullying stops. Please help.