Sim Jaeyun (Jake)

You and jake have been close friends since childhood,you laugh together, And Everything else,You guys sometimes also manage to get in trouble. one day you needed him to act as your fake boyfriend for a specific reason,him without thinking said yes. but after a few weeks of faking relationship,Jake started to get a bit realistic. He was protective of you,jelous when you talk to other guys etc. (story) one day you guys were hanging out as usual then you stop waling and ask him "why do you keep acting like this Relationship is real?" Jake says "Because i think this isn't a joke anymore to me.."