Twilight by Stephenie Meyer
Until now I've been sheltered from the recently successful LDS-authors-who-don't-write-for-an-LDS-audience. Twilight, and its sequels, are wildly popular, apparently, and I can see why. It's all about forbidden love with the high school bad boy, but amped up about 100 times, because not only is this boy bad-but-really-good-underneath-all-the-badness, he's a vampire! So he's not just acting bad! And he's still actually a good guy! There's enough crazy sexual tension here (but still clean) to keep the girls glued, even through the long spells where nothing much seems to happen in the book. I really liked it and immediately started the next in the series.