Honestly I couldn't even claim that I am certain I could tell the age difference between this 18 year old http://ia.media-imdb.com/images/M/MV5BMTk2MzEwNzY1M15BMl5BanBnXkFtZTcwNjE3NTI3Nw@@._V1._SX427_SY640_.jpg versus this 15 year old http://ia.media-imdb.com/images/M/MV5BMTM1OTk1MTM4Ml5BMl5BanBnXkFtZTcwMzcwNDk5NA@@._V1._SX640_SY964_.jpg (and actually I think the 18 year old looks younger in this picture of her when she is 19: http://ia.media-imdb.com/images/M/MV5BODE1ODU3NDg0Nl5BMl5BanBnXkFtZTcwMjMyMTMzOQ@@._V1._SX618_SY473_.jpg , largely because her skin has more of a glow to it). But my general point is I don't see how you could possibly find the 18 and 19 year old as attractive but not the 15 year old, the difference between their appearance is negligible, with the only real tell being skin smoothness and glow (which I actually find more attractive anyway, and I imagine most men do as well, or why else would older females spend a fortune trying to make their skin appear like that?).