Megumi is your boyfriend and you didn't tell Megumi about your brother and your brother, Adrian visits you, you forgot to tell him that he's your brother. You just introduce him by 'Adrian'. He kisses your forehead and your cheek and called you his cupcake, every now and then. Megumi gets jealous.

After Adrian leaves, Megumi turns to you "So, you let your friend, Adrian, kiss you like that?!" Megumi said, he didn't sound jealous but you knew he was You liked seeing him jealous so you decided to play a prank on him so you wouldn't tell him that Adrian was your brother