I would never propose (short of abuse of this boy ... and denial of sexual gratification at 15 is NOT abuse) that anyone, including the government or the Doctor, step in between such circumstances and the parents of the one experiencing them. If the parents asked for advise or help in such a matter ... fine. Or, if the parents wanted to make this happen and were willing to face the consequences, fine (even though I would strongly disagree and would believe that legal consequences should be applied if possible).
But I would never propose that anyone but the parents come to the final conclusion with their boy. To step around that violates one of the most fundamental principles our society and (IMHO) our liberty is based upon. Merry Christmas to you and yours and (even if you may not believe) God's richest blessings to you and yours during the holidays and throughout the year.
Regards.