Zoro would kind of be the perfect character to write traditional hanahaki fic about if you think about it -
Cause the whole Thing about hanahaki isn't just about unconfessed/unrequited love, its also about the deadly repression of that emotion and that bottling things up can literally kill you
Its a lot like qi in xianxia novels (what I have read at least) - negative emotions being a literal detriment to your health to the point where you cough/spit/vomit blood
So really, its the perfect plot bc by the time Sanji realizes that Zoro is in love with him; he thinks he's missed his chance because years have passed and the hanahaki is gone. But really zoro's just recognized and accepted his own feelings and is fine with it. The cook loves him as nakama and thats important, they work well together and Sanji is happy and that's important!
So he's Fine
Until....