Here’s a trio of pieces (one of them from the Onion) consider how we talk about teenage girls and why talking about teenage girls in these ways is damaging:
The Myth of the Teenage Temptress: Or Why A Young Girl Cannot Consent To Sex With An Adult Man (warning: there is some frank discussion of sex in this piece)
This is slightly related. Here’s an article analyzing the defenses that Hollywood notables brought for Roman Polanski in 2009. Polanski was accused of drugging and raping a 13-year-old girl in the 1970s. One of the reasons so many people gave for defending him is the fact that Polanski and the girl had sex before, as if that precluded the possibility of rape and as if a 13-year-old could give consent to an adult man.