Because the age of consent in your state is 17.
They can be charged for endangering the welfare of a child (their son). It's true that you can move out with your legal guardian's consent - but moving in with your 15 year old boyfriend? Not so much.
Because the age of consent in your state is 17.
They can be charged for endangering the welfare of a child (their son). It's true that you can move out with your legal guardian's consent - but moving in with your 15 year old boyfriend? Not so much.