Toreadors are unique in that, though I think they don't fall in love with humans that often, or at least I haven't found references in the game for that. Only the Hollywood baron (forgot his name at the moment) has a story that has him loving (whether romantically or more as a father figure) a human and not being able to bear losing him. Toreadors enjoy manipulating humans more than the humans themselves, I feel, probably because it makes them feel more human in return.
Most vampires see humans as cattle. Jack compares them to cows, and Jack is not low on humanity as far as I know.
With humans it is a rare case that is the truth. They can fall in love more often with other vampires like Mikali(toreador).
Also referencing lore there is also,
-You have at least heard, in passing, of Legendary Toreador, such as: Rafael de Corazon, one of the Founders of the Camarilla and the "spiritual father" of the Masquerade; and Tannit, the supposed lover of the Brujah Troile who followed him to Carthage.
-You have heard the story of how Arikel supposedly loved Absimilliard (the Nosferatu Antediluvian), and have heard the story that it was the scar on his face that drove him mad with vanity and led him to disfigure himself.
-You have heard of "The Lovers", two Cainites of the Second Generation, who committed suicide upon realizing that they could no longer consummate their love. It is said that Caine forswore ever embracing childer on this event, and that the rest of his lineage is cursed because he broke his oath. You have also heard that it was Caine who disfigured the Nosferatu for mentioning "The Lovers" to him, stirring up painful memories (Although this contradicts the story that he disfigured himself out of vanity).'
They are more examples of lore down the line.
Source : http://www.unmasqued...5240835f021eade