It depends on what sorts of books you like. So...what sorts of books do you like?
The Mortal Instruments series by Cassandra Clare is pretty cool if you like modern fantasy (and it's being made into a movie soon, so there's a plus). There's some romance and, like, sexual references every now and then, but it's not "erotic". Typical YA lit romance stuff.
Also, the Gone series by Michael Grant is AMAZING. It keeps you on the edge of your seat and only has one 'sex scene' (you can't really call it that; there's no detail. they go to bed and then it cuts off) in like the fifth (?) book, but that's pretty much it. It can be kind of creepy/gruesome in places, though, but it's still DEFINITELY worth a read.
Aaaand that's all I can think of off the top of my head besides John Green books, which I'm sure you've probably already read. (:
Do you mean "nothing with any described sex in it" ?
The Stoner McTavish series or the Jane Lawless novels by Ellen Hart (with Hart you sometimes even get recipies included) are both very good - I can't remember if the characters do any bonking, but if they do it's not anything which you wouldn't want your wife or servants to read.
The hitchhiker's guide to the galaxy series by Douglas Adams is a good bunch of books
John Green (duh), Choke by Chuck Palaniuk, Wicked, The first three Vampire Chronicles by Anne Rice, Hunger Games, mrrr...
I just finished The Perks of Being a Wallflower and I loved it, would definitely recommend it :)
-the hobbit by J.R.R.Tolkin
-the hitchhikers trilogy by douglas adams
-john green's books (all of them)
I know a lot more but I can't think of any more off the top of my head right now
If you've not read The Book Thief, I highly recommend that you stop what you're doing and get on that.
Folk are gonna get sick of me whoring out this book on this forum but, what can I say, it's my fave.
In watermelon sugar by Richard Brautigan
1984, Breakfast of Champions, Go Ask Alice, The Giver, To Kill A Mockingbird, all of Chuck Palahniuks books, all of John Greens books, Sex, Drugs & Cocoa Puffs, and Crank.