Today is Ni-ki's birthday, ur boyfriend. U decided to prank him by pretending that you forgot his birthday and he was all sulky when you started your prank.

He tried giving you signals like, "do you know what day is it today?" And "I think it's somebody's bday today" so that you'd know that it's his bday but you acted like you still have no idea even though you just wanted to prank him even more to see his reaction.

Hmph.

He mumbled while sitting on the couch, sulking like a little kid.