Dagger To The Heart
There were a number of things Sanji had expected when he finally came across the missing swordsman. But the one thing that never even occurred to the cook, was the one thing he found. Sure, if Zoro had been a woman instead of the stupid bastard that he was, Sanji would have feared it greatly. But.... Zoro wasn't.... he wasn't weak either; after all, he, Zoro, and Luffy made up the monster trio.
But nothing changed the reality of what he saw in front of him. No matter how much Zoro would try to shrug it off, play it off as nothing, Sanji knew it was not nothing. And when Zoro begins to spiral out of control, only Sanji, the keeper of Zoro's secret, will be able to temper the storm before the dagger to Zoro's heart destroys him.
Sanji/Zoro
Chapters 1-7 edited as of 7/27/2015