Sexual related thought
I like how in movies virgin girls that are going to have sex for the first time are always completely innocent and have barely kissed guys. In the part of the real world where I live in if a girl is going to lose her virginity chances are high that she's gone through hands->mouth stages first, but whatever, maybe I'm just cynical.
I agree with you on the innocent part, I remember all the virgins I knew, never came off like they were virgins and if anything they had at least had some experience with what they were doing.
As far as the later part, its a possibility, I wont rule it out. Although every gen. both genders promiscuous nature happens earlier and faster than the last.