Heeseung is your bestfriend and you two are super close but he has a Girl bestfriend and that is "Aria" he always with her but yes it hurts because it seems Heeseung had a feelings on aria but you had a feelings on him but he didn't know it. You always protects Heeseung even he didn't know it one day you had a argue with him it's the first time he yell on you. It's because of aria didn't say the truth aria lied that you feed his dog a shrimp that the dog has allergy