Jeez come on, being a nice guy doesn't mean he's clueless. Link obviously loved Ilia. I don't think kissing or sex -for sure- fit at all in a Zelda game. Come on, really? Sure there can be a wish for a relationship, but we will probably not ever see Link IN a relationship. It doesn't work with the whole tragic hero thing.

I think the thing with Link though is female relationships are really the last of his problems throughout the course of the games. He is fighting to save the entire world from an unimaginable dark evil.