When I was 17 by about three weeks, a 24 year old woman and I had an affair. I'm fifty years old now, and I'm still greatful. There was a thread about another teacher who had sex with a 13 year old boy and that's different. By the time you're sixteen, you know what you're doing, in regards as to whether or not you choose to have sex with someone.
I remember when I was 18 I was dating a 27 yr old.....which is an even bigger age difference than this one....
Honestly at 16, I had an idea what I was doing. I might not have known fully, but it was different....