I read my first Harlequin when I was in middle school. I wonder if I gravitated to reading romance at an early age because I already read through the young adult section at the library. (That makes me sound like a voracious reader, but the truth is that the library just didn’t have that much of a selection!)
I kept checking out books like Fifteen by Beverly Cleary and The Pink Dress by Anne Alexander. Both of those books were outdated when I got a hold of them, but I didn’t care because the teenage angst was timeless! Sweet Valley High hadn’t been created yet, but the Sweet Dreams series was popular among my friends. I recently visited a site dedicated to Sweet Dreams. Wow, did that bring back memories!
What did you read during your teen years?
Ah, well, high school years, the thing that sticks out were all my Star Trek and Star Wars novels. . . yep, Star Trek.
Didn’t discover romances until much later. 
Lois
My twin sister was really into Star Trek (and I think she still is), but it has always been romance for me.
I was more of a fantasy reader in school, then towards the end of high school turned to romance… been hooked ever since!
I secretly borrowed my sisters’ romance novels until I bought my first Johanna Lindsey paperback.