I had the same thing happen to me awhile back, I met this girl and i was like DAMN..She had such a sweet body, The cutest face..And the most nicest tit's i think i may have ever seen (And that was with her clothes on).
We started talking and i thought to myself..How old is she, She was 16
I felt like a bit of an idiot cause i kept staring her up & down.
Alot of girls look alot older than what they actually are..I totally thought this girl was atleast 21 or 22.
I don't think you should feel like a pedophile, I think alot of guys can say that girls that are 17, 18 etc sometimes tend to look alot older than what they actually are.