Zelda is the eternal Damsel in Distress in the Legend of Zelda video game serie, crowned Princess of Hyrule, and holder of both the Triforce of Wisdom and the Light Force. Vaati on his side is the second most reccuring main villain of the serie, having appeared three time, the first time changing Zelda into stone and stealing part of her powers, the two others time trying to marry her.
At first view it'd look like Vaati may love Zelda, but that Zelda hates him. But who knows? In the manga version their relationship end in a far better way, partly due to Vaati becoming good. Maybe they can even see her as a friend. In all case, it's to you to decided how you see their relationship.
A Fanlisting is a place where fans of something or someone gathers, by joining the said Fanlisting, allowing to give the respect, or the love, admiration he deserves to the subject of the Fanlisting. It can also allow peoples who are fans of the same topic to meet and this way to create new friendship thanks to this very topic. The topic of this very Fanlisting is, obviously the relationship Zelda and Vaati share.