I had the 19 year old son one time on this one. There is NOTHING in our culture today that teaches or implies or shows these young people, the older one, that it is a CRIME or molestation to date a girl or boy who is in their same class and seems to be about their age in maturity and looks and all that peer group stuff. Watch movies, tv, listen to their music. Does ANYTHING tell them this is a bad idea? Do they ever cover this in Sex Ed, even if they have any besides "don't do it till you're married!"?
And falling for a girl who is being "mistreated" and asking for you help and sympathy at the first time in your life you've probably ever had the means and power to "help" (as in you've got a job, you've got a place, you don't have to ask YOUR mom and dad, for the first time)...it's a heady tempting thing to be Jim Dandy to the rescue here.
And of course with all those teenage hormones raging, thinking with the wrong body part while still mentally not so mature regardless of chronological age, which of course is what the young girl is going to be doing too. But it does not, repeat, does NOT make him a child molester. I got my son through it all with minimal damage to his psyche and his criminal record. Thank God she's gone on to ruin other lives, she was very intelligent, even a couple of years ahead of her age group in school!But lets not throw them all in the same bucket and tell the older one they're always child molesters any way except legally. We want this OP to listen to us, to hear us and understand what the laws are and not make this terrible mistake he's about to make.