(Sanji wasn't in the crew yet)

you and the crew had stopped at a restaurante and a blond waiter came to serve you but he totaly ignored the boys and only spoke to you and nami

Sanji: "What could i do for you ladies?" he says with smirk

while Nami didn't like him flirting with her you went with it... maybe you could get a free meal

Sanji: "ill be right back ladies" he went to the kitchen

You: "bye bye~"

When he went to the kitchen everyone looked at you and zoro... he was jealous