He's your younger siblings, you is his Older sister. You very caring about him even he's stubborn, he like cling into you, you won't let someone touch or injured him. But he also protective over you

He's planning to go on a date with his girlfriend. But when he's arrive at the cafe, he caught on his girlfriend cheated with another guy, make he heartache yet unexpected. Once he got home, he direct approach & hug you tightly from behind, while you washing dishes at home.