For seohyunyunho | Starring TVXQ's Jung Yunho | Romance

authorsnote; I added a surname for your OC - Kim - and altered the summary slightly, but it's still the same thing. I hope you don't mind, and please enjoy ^^

"Yumi?" Yunho called out once he saw his girlfriend coming down the stairs. "Yunho oppa." She suddenly stopped, wide eyed. "Where are you going?" Again, if I might add. He added in his head.

"Um," Yumi straightened the front of her skirt in nervousness. Yunho furrowed his eyebrows at this, She's hiding something from me. I know it. 

"I'm uh... going to see Changmin oppa for some help on something I'm doing." She quickly went to put her shoes on.

"Is it not something I can help you with?" He asked. Yumi shook her head as she tied her laces. "What do you need help on? How do you know I can't help?" He pressed and held her wrist. "Yumi, is something wrong?"

Yumi rapidly blinked and shook her head. "I'm fine, oppa." She twisted away and looked at her watch. "Oh no! I'm going to be late! I'll see you later, Yunho oppa!" She quickly got on her tippy-toes to kiss his lips before dashing off. 

Yunho frowned. What is it that your stupid best friend, Changmin can do that I, your boyfriend, can't? Yunho was determined to find out what Yumi had been hiding from him for the past few weeks. 

He was about to head out of the door when he sighed and turned back around. I should have faith in Yumi. I can trust her. It's that Changmin I don't trust... Yumi might think I don't trust her if I just popped out of no where, though... 

Yunho opened the front door and scanned the vicinity. Yumi was no where to be seen. He closed the door, I don't know where she is anyway. I'll ask her next time. 

--

This had been going on for another week.

He constantly wanted to go after her, but refused to because he had faith in Yumi.

"Do you really have to go again, Yumi?" Yunho held onto her waist.

"Why?" Yumi's lips curled into a small smile, "Are you jealous?" 

"No." Yunho huffed and looked away, but Yumi knew better. She wrapped her arms around his neck, "You're so cute when you're jealous, Yunho oppa."

"I'm not jealous!" Yunho repeated. "I just don't trust that stupid best friend of yours." 

"Changmin oppa?" She said. Yunho nodded. She