Young Love! Jaden Smith,17 kisses girlfriend,21 squeezes her butt at NYFW

Is it legal? 17 year old Jaden Smith was locked in a passionate embrace with new 21 year old girlfriend,Sarah Snyder

After sharing a tender kiss at the Gypsy Sport Spring 2016 debut they were then seen smooching again while out and about inNew York..
Looks like he's finally moved on from Kylie..However,is it legal for him to be dating a 21 year old? I mean..Kylie was 17 when she hooked up with Tyga and they were virtually crucified..