9 Aug 2012 The difference between a 17 year old boy and a 19-year-old girl is big enough. An 18 year old boy is really 16 so they level each other out and are on the . A huge amount of brain development happens in the 15-20 years.
Right now you'd be a twenty one year old guy dating a girl in high school -- doesn't matter how you dress that up, it still .. He was probably 19 or 20. . A friend of mine, at the age of 22 or so, started dating a 16-year-old.