You were out partying, but you didn't tell Keyhan because you wanted to have fun for youself.

When you got back home, Keyhan wasn't there but you couldn't careless because you were tired. So you just got to your room and layed down.

A few minutes later someone opened the door with a serious looking face, it was Keyhan.

"You were at the party huh?, without telling me?" he said with a serious look on his face