Anonymous wrote:He has no proof something is going on except child's behavior. Cousin could be staying stuff to son to make him act up with exchange and not want to go or something could be happening at ex's. He needs to get child evaluated and figure out what is going on. He'd be in for a huge expensive custody battle that isn't in the child's best interests in less abuse is happening.
Read the post properly, PP. This child is harming himself. At six years old. Much more is happening than his father "saying stuff." The child is terrified to go to his mother's home and that change occurred when the new boyfriend entered the picture.
OP, this boy needs immediate help. Listen to the PPs who actually paid attention to your post and help your cousin get legal advice ASAP tomorrow morning on how to get intervention, whether that's CPS or something else. The boy's behavior screams for help. If he's not being abused (and abuse can be verbal or emotional--it isn't always just about hitting or sexual abuse)-- if there's no abuse, the boy still may have mental health problems that clearly need diagnosing. Either way this child needs an adult to intervene and his dad must step up and do it. Now.