(Lee joon POV) 
"I think i know the reason why she broke you.." I look at nana "wae? What is the reason?" Nana laugh

"Oppa! Why is your expresion like that? Its so cute! Gwiyo!" 

"Ya! I'm not kidding! Tell me! I'm curious!" I glared at nana "haha! Ok! Arasso! I tell you ! 1 years ago..." 

*1 years ago* (author POV) 
"Hyuna! Happy birthday eo! If you've already become a famous model please don't forget me eo! Wish you all the best!" Lee joon hug hyuna, hyuna smile 

"ne! Arasso! Gwomawo-yo! You're really my perfect boyfriend" lee joon smile 

"I have a present to you! Khaja! We're going there now!" Lee joon pull hyuna hand then they arrived at a restaurant 

"What is it oppa?" Hyuna look at lee joon "it'll be a perfect present for you!" Lee joon push hyuna to come inside the restaurant, the restaurant is full of rose and there is a lot of candle and the candle make a love shape, hyunah gasp "wow! Its so beautiful oppa! How can you make this?" Hyunah look at lee joon 

"Its special for you hyuna! I make this because i'm really love you !" Lee joon hug hyuna "gwomawo oppa! Aa.. i want to go to the toilet first! Wait here ok?" Hyunah go to toilet and lee joon stand there alone 

"Lee joon oppa! Is it you? Yes its you! Long time no see! How are you?" Someone approach lee joon and lee joon look at the girl confused "ya! Its me! Ailee! How can you forgot your cousin!" Ailee look at lee joon "aa! You're ailee! Long time see! I'm really miss you so much!" Lee joon hug ailee when he hug ailee hyuna came and look at lee joon and ailee 

"Oppa? Who is that girl? Why did you hug her?! Are you cheating on me?! Oh my gosh! I can't believe it ! You were cheating on me! I want broke up NOW!" hyuna scream at lee joon and run away 

"Hyuna!! I can explain it!!" Lee joon follow hyuna, then hyuna go to her house and slam the door "hyuna!! Open the door! I'm not cheating on you! She is my cousin! Ya!" Lee joon knock the door 

"Go away oppa! I don't want to believe you again! GO AWAY!" hyunah scream really loud while she was crying "hyuna.." 

"GO AWAY!!!" then lee joon sigh "arasso! I go now!" The lee joon leave her "how dare him! He was cheating on me! AAAA!" Hyuna scream nana approach her 

"Unnie? Why are you crying? And why did you scream very loud?" Nana sit beside hyuna "lee joon oppa was cheating on me! i think he will never cheating on me ! But.. he is cheating on me!" Hyunah cry, nana sigh "i think lee joon is not cheating on you! You must be misunderstood!" 

"No! He was cheating on me! If he not cheating on me why he hug that girl?!" Hyunah keep crying "it can be his bestfriend or his sister? Or his cousin?" Nana look at hyuna "i don't care! The importent one is he was cheating on me! Okay?!" Hyuna go to her room and nana sighed 

"So.. i think thats why she broke you.." nana look at lee joon, lee joon was silent for a while "i think if you tell her, she will not believe you, but if ailee tell her i think she will believe it! You know she is very stubborn ! She will not believe someone easily! Except me and our family!"