I guess we'll just agree to disagree on this point. For me, under 18 = boy/girl, over 18 = woman/man. That's the reason I never refer to our "boys" in Iraq. In my opinion, any guy who has an eye for the fey looks of a slim, underdeveloped teenage boy is a pedophile.
It is the same as the "pedophile" priest phenomenon. It isn't little boys or little girls they are after, but young men, because they are gay men, and desire for teenage boys is a big part of the gay psyche, something they want hidden. Once you understand that, the facade of "just another lifestyle" is torn away.