Sophitia is married, but I have heard of LinkxCassandra, and I've always thought of Talim as a possibility, but I believe SC2 Link is the same as OoT/MM Link, and it stated that he went back to Hyrule after you beat arcade mode with him.

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Sig made by Happy Mask! With some small edits by me!

Malcolm Reynolds-They'll swing back to the belief that they can make people... better.
And I do not hold to that. So no more runnin'. I aim to misbehave.