If we were to take your querry seriously, what of the couples under 18 whom have sex? Is everything honky dory until one of them reaches their eighteenth birthday and becomes a "child molester?"
Never mind that it was his own cousin and his moves on her were unwelcome. Allegedly.
But anyway, it's generally your side of the political spectrum that imposes retarded, draconian variations of 'statutory rape' on our nation's youngins, not mine. (Remember that 17-year old in Georgia who got 10 years for letting his 15-year old girlfriend give him a BJ?)
The age of consent/child pornography laws in this country are ridiculous:
http://chicago.cbslocal.com/2012/06/21/ill-supreme-court-sex-with-17-year-old-was-legal-pictures-were-not/