I think
coffeeandink covers everything (linking to tag to preserve spoiler cut), but I will attempt to write something.
In Mariposa,
sophia_helix and
sartorias were discussing Stephanie Meyers'
Twilight, particularly focusing on the sublimination of desire and therefore having your cake and eating it too. I think
Vampire Knight is an example of that done right; I cannot tell if having gorgeous art and pacing via paneling is what makes it work, given that both Yuki and Bella are irresistable to all sort of vampires, that Zero and Kaname and Edward all have difficulty controlling their bloodlust and/or desire to possess the heroine, and that neck-sucking substitutes for sex.
But while
Twilight left me cold, this manga has me squeeing like an adolescent girl over Zero and Yuki and the biting and the hand-holding and the hair-caressing! And the angst, OMG, THE ANGST!
I think all the UST lies in the way the panels space out the action, or in how I have to fill in the emotion as the reader. Also, not having descriptions of jewel-colored eyes and hair helps, even though I am 100% certain that everyone in the manga has gloriously unworldly coloring.
( Spoilers )I should be critiquing the gender roles in this much more, but honestly, the UST and the angst and the pretty neck-licking have taken over my brain.