A 62 year old or a 16 year old can get arrested for statutory rape for having sex with a "willing" 15 year old girl.
By law, she can't make that choice "willingly" because she is considered under age and is protected, as a consequence, even is she assents to the sex.
Boys and men, beware of jail bait.
But if the boy is close in age to the girl,
no ‘abuse’ occurred, in many states. ‘Abuse’
is like assault: It means what the DA wants
it to mean.