Oh Sehun stared at her intensely, as she walked down the aisle with a blissful smile plastered on her pretty face.   Blinking back protruding tears, he watched her kiss him, her husband Jung Daehyun on the lips; her eyes closed gently, her beautiful lips pressing on someone else's.   He clenched his fist tightly as she smiled brightly, her face flushed red in embarrassment, as Daehyun deepened the kiss until she ran out of breath and everyone started cheering and clapping wildly.   He didn't understand.   He was supposed to be the one who would walk down the aisle with her.   He was supposed to be the guy who would kiss her proudly in front of everyone.   He was supposed to be with her forever, for eternity.   Yet here she was, marrying someone else, and abandoning her own boyfriend.   Sehun stiffened as he noticed her coming towards his direction, hand in hand with Daehyun.    "Congratulations." Sehun said curtly, forcing a smile on his lips.   "Thanks for attending," she smiled sweetly, and beckoned for Daehyun to go greet the other guests.   As he left, her face immediately changed 180 degrees, and worry was apparent on her radiant face.   "Sehun, I'm so sorry," she whispered, noticing his stoic expression that radiated hurt and betrayal.   "Save it, Saemi. You can go live your happy life with Daehyun now." he said bitterly, stiffening his back and adverting his gaze so that he didn't have to look at her innocent brown eyes that always made his heart flutter. Saemi felt her heart drop when he didn't call her "noona" like he always would when they were still dating, but Sehun thought none of that...she was not the old noona he knew anymore.   She glanced at him pleadingly, "I hope we can still keep in touch."   He scoffed inwardly, and presented her with an eerie silence. She stared sadly at him for a long period, her puppy doe eyes could melt anyone's heart; it was the look she always gave to Sehun whenever they had a fight and she needed him to forgive her. Sehun glanced away, refusing her advance. She was Mrs.Jung now...no more could he treat her as if they were together.   Sighing softly, she walked away from him, knowing she had failed to reconciliate with the cold boy.   He stared as her long, white, lacy dress soon vanished from his sight, and he felt a pang in his chest.   He never knew the reason why she suddenly agreed to this arranged marriage.    I guess, people change, he thought bitterly. ---------- At the wedding party, there was a timid girl hiding in the corner, out of everyone's eyesight. She was wearing a short mini dress, but strangely had a cardigan draped over her upper body.   She was called Lee Saera.   Today was probably the worst day of her life, seeing him marry her own older sister, Lee Saemi.   She clutched her chest as memories flooded in, how Daehyun refused to have an arrange marriage with Saera, and instead, wanted to marry Saemi.   She was utterly heartbroken, not because she had strong feelings for him, no, she would never like Jung Daehyun, her heart only belonged to one person anyway, but mostly because she was ridiculed; ridiculed because once again, her sister was on