Because if you were in high school during those films, then you are also roughly her same age. So that means she stays beautiful to you. (She is in general too btw).

Its one of my favorite things about getting older, a greater and greater percentage of women are beautiful. At 17 I never would have thought of lots of 37 year old's as hot. Now a 37 year old, they are everywhere.

I'm starting to get where college girls are looking too young though, I can't tell them apart from 15 year olds that have been too young for 20 years now.