SS Link and Zelda clearly mean the world to each other, one of the trailers for the game that focused on interactions between the two was even called "romance."
Interactions between OoT Link and Zelda are still plentiful but more dubious, and considering TP Link's occupation and the restrictions Sages face in regards to marriage, it's most likely this Link instead ended up with Malon.
TP Link and Zelda barely interact at all throughout the course of the game. He gets way more scenes with Midna, who's definitely implied to feel something for him in the ending of the game. Said ending, of course, makes it implausible for the two to subsequently pursue a relationship given her departure. And that just leaves Ilia, a childhood friend of Link's who cares for him deeply. As much as I personally prefer TP LInkxMidna, Link most likely ends up with Ilia.

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