Forget the characters you’ve seen on TV or in movies, okay? Anyone can fall in love with Ava Gardner. What literary characters have you wanted to have sex with based solely on what you read in the books?
Dejah Thoris? Candy Christian? The Monkey (Portnoy’s Cpmplaint)? Or if it’s dudes you crave… Heathcliff? Victor Frankenstein? Natty Bumppo? Who gives you an unnatural attachment to your librtary card?
Angua
Alex from A Clockwork Orange.
Hester Prynne from The Scarlet Letter
The main character (I forget her name) from Rebecca.
Estella from Great Expectations
Actually, Tangent, the narrator’s name in Rebecca is never used. I didn’t notice this until the second time I’d read it; you only know it’s an unusual name because she says she’s impressed Maxim spelled it right, even though it’s fairly uncommon. But she never says what it is.
Good one though…whatever her name is, she can be on my list, too.
Remus Lupin.
Conor Larkin
Vina Aspara.
Roland of Gilead
Jane Eyre
The protagonist from Harold Robbins’ “The Pirate”.
There’s a scene in which he is having sex with some concubines or something like that, and one of them sticks her finger in his rectum and manipulates his prostate, and he has a mind-blowing orgasm. 
That turned me on so bad, especially because I was 13 or so at the time the book came out.
Then there’s also the protagonist from Roger Zelazny’s Nine Princes in Amber. Boris Vallejo did the cover art for the book jacket, so inspired me to think of him as lean, muscular and healthy.
Or Biff, from Piers Anthony’s A Spell for Chameleon. Again, the cover art makes him seem so fit, blond and, I don’t know, California.
Pratchett’s Angua? Or the SD’s Angua? 
Now, literary characters to have sex with - Oberon from Midsummer Night’s Dream, and some of the male characters in Anne McCaffery’s Crystal Singer series - yum.
Have sex with literary characters?
But wouldn’t the pages get all sticky?
::d&r::
Rebecca of Sunnybrook Farm
Bonanza Jellybean.
Kitty Butler from Tipping The Velvet
Friday from Heinlein’s “Friday”
Eowyn
From Lobsang
She’s pretty good, but Susan Sto Helit is the one get my juices flowing.
I’ll second Roland of Gilead. Also Steerpike.