Heeseung is your best friend and dance partner. You've always been inseparable. After the end of training, he hugged you and kissed you on the temple, sometimes you borrowed his clothes and in general you were very close. Exactly until he had a girlfriend. Not only was your heart broken, but you also lost your best friend. No, he didn't cool off to you, it was just impossible to have friendship with his jealous girlfriend like before