GettinHotWithJC wrote:
They're both fucking sick. I don't give a damn if he's 16. He knew it was wrong just like she did. I hope he never has any children and they both rot in hell.
You don't know the details.  He could've had regular contact with her from the time he was young and been abused in any number of ways plenty early enough to cause psychological trauma resulting in him "willingly" taking part in this relationship.