"Sex is sex, Sookie," he began in answer. "Sex with humans is a bit more... intoxicating. We have the thrill of feeling their heart race, their pulse quicken, all the impulses a body has when it is still alive."
Eric smiled and moved with vampire speed to close the gap between them. Before Sookie had the notion to realize what he was doing, Eric had moved her out of the chair and now had her in his lap straddling him in his chair.
"Sex with you, however, has the added delight of tasting your amazing blood," he continued. He began placing kissing along her cheekbones and then moved slowly down her neck. "Drinking from a vampire will heal another vampire when necessary, but it isn't nearly the lifeblood we receive when we drink from humans." He nipped gently at her neck to intensify his words. "Sex almost always includes drinking and drinking from a human is much more intense, satisfying, indulgent than drinking from a vampire."
He continued kissing his way down the parts of her body that he could get to, stopping at her breasts and kissing and teasing each in turn.