Guess who I am

After breaking up with his boyfriend, college student Jacob needs a new roommate to share the rent with.However, the recruitment poster he posted on the school bulletin board was ransacked in the blink of an eye. Not to mention, the "poster thief" signed by "X" even left a message on the bulletin board to establish communication with Jacob.In the next few days, three handsome men with different styles came to Jacob's apartment to be interviewed by roommates. Which one of them is the mysterious "Mr. X"?