Rin is your boyfriend, he is quite ignorant but actually he really loves you and gets jealous easily

one day you and Rin went to see a movie at the cinema, you two watched the movie The Amazing Spider-Man, when the movie finished you told Rin

"Spider-Man is so cool, isn't he?" Rin just kept quiet and nodded

two days later you visited Rin's house without telling Rin,you entered his house,then you walked into his room, when you entered his room you see Rin wearing a Spider-Man costume