Luffy likes Y/n. Luffy and his crew helped rescue her from the marines. She ate the space space fruit. He is all over y/n. Cuddles. And slowly the crew start to teach Luffy about love and relationships. Nami teaching him about kissing. Chopper explained sex even though he was uncomfortable. Luffy learns to show you his love and how he wants you to be his. He has to struggle with being possessive/jealous.