Yeah...you and Zoro spent a rather heated night together... days go by and Zoro doesn't seem to have forgotten it...since he reminds you of it every chance he gets, just to annoy you.

Like today...

You were both returning to the Thousand Sunny with some supplies when you complained about the weight of the boxes. He simply said: "Now? I can give you another reason to complain." He says nonchalantly, but clearly teasing.