How do you know whether they are?
Compare 15 yr old school gals with 21+ girls, then note down the
difference.
If you want to scrutinize further, look at photos of girls' school
gals, note down all the traits: ie. fair smooth skin, firm
bustline, plump healthy features, etc. and compare these with the
girl at your line of sight.
BTW by age 25 very few are virgins, if they are, they just ain't
that pretty.
So your best bet is to love someone from young, and marry them in
future (when they are old enough).
