The Ruby Oliver books: The Boyfriend List, The Boy Book, The Treasure Map of Boys, and Real Live Boyfriends by e. lockhart
The books are funny, the type of boy you like is bound to be in the series somewhere, and there's nothing that will make you do anything embarrassing in public (like cry).
I'm posting my review of this tomorrow, so all I'll say is that I love a book that doesn't take itself too seriously. And there's a pink taser.
The Sky is Everywhere by Jandy Nelson
If you want a little more meat with your summer fluff, this is a great book. There's still plenty of fluff, but have your sunglasses handy because this one will make you cry. (And just a content FYI - watch out for the sexual content. One scene in particular is more descriptive than I cared for)
The Truth About Forever by Sarah Dessen
It's set during the summer, there's deliciousness, and its' a cute story. But it's also a cryer.
Harry Potter and the Deathly Hallows by JK Rowling
This is what will be playing while I road trip this summer. I've got to get ready for the movie, after all.