Sanji was in love with Zoro, until he discovered that he had the hanahaki disease, which was basically caused by the lack of reciprocal love in a pure and genuine love, and this disease is killing Sanji internally.

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Once, the blond was holding flowers, waiting for Zoro for a supposed date, but the swordsman's absence killed him inside, Zoro took hours and didn't even bother to justify himself to the cook.

"So you just got lost on the way and on time?" Questioned the blond holding the bouquet.