He's your bodyguard.

He's very cold, and strict, he's always protecting you from any kind of danger, he doesn't even let you TOO close to your friends.

One day he was working out in the gym and you were pretending to read a book while actually staring at him.

Taehyung noticed it and smirked while doing push-ups.

Taehyung:"Your book is upside-down princess..."