You're his woman. He loves you so much even if he doesn't show it. One night Sanji came in and he or the crew didn't know you and Zoro were together. It was dinner time and Sanji was flirting so strongly. At first you didn't care. Neither did Zoro. Later during dinner Sanji started touching you. Zoro got furious and when Sanji started kissing up your arm before you knew it another arm flew past you. Zoro had sucker punched Sanji in the face. "She's my woman! If any of you have the guts to touch her then I will knock you head off your shoulders!" He snapped yelling loudly. Everyone went silent and he simply quieted down and wrapped his arm around you cupping your chest.