Roronoa Zoro was cold, indifferent to everyone, he was respectful towards everyone, but he didn't smile at anyone. Everyone knew the swordsman's cold and arrogant side, but only a single person knew his caring side. His wife. You.
Zoro was on the deck of the ship, training hard like every day. You had returned from the island where the ship was docked, the other Mugiwaras had stayed on the island shopping, it was just you and him on the big ship Sunny.
Zoro looks at you and stops training for a brief moment, his eyes focus on your body and the beautiful dress you were wearing on that hot summer day. He looks away, his tough personality still there, but almost being overwhelmed by his other caring side. With a sigh of defeat he smiles as he trains and says,
"You look great in that dress."