Whenever I hear someone my age say, "they didn't have teen books like that back when I was a teen," I point to the most amazing Norma Klein.
Sadly out of print; go over to Jezebel to see just how awesome Klein's books are. I almost want to hunt down each and every one of those books on ebay right this moment. Except where would I put them? Sigh.
What's also interesting is that Klein had smart girls who had sex and -- wait for it -- didn't get punished for it. The books were set in that post-birth control pre-AIDS world of the 70s/early 80s; as Jezebel says, it's a world where "What if all we had to fear were the hearts we'd break or the hearts we'd take?"
Speaking of that era -- I'm really looking forward to Swingtown.
Back to Klein.
You may also know her thanks to the fictionalized Sunshine, best young Mom dying of cancer break your heart book ever, and the made for TV movies and TV show; or this Valerie Bertinelli movie based on one of her books (but I think they set the movie in California? Instead of NYC?)