~Outside the amusement park~

Eun Ha is the earliest there while it took Min Woo a while to drag the twins out.

Min Woo: Eun Ha dear~~! You're early. -smiles- Where's Ji Won?

Eun Ha: She can't come because she has some things to do in school. And I'm NOT early, you're the one who is late! 

Min Woo: Sorry babe~ -puts arms around Eun Ha- It took me a while to get these two out.

Kwangmin: Yah, Min Woo, what are you doing!? 

Youngmin: -pushes away Min Woo's arm and pulls Eun Ha over- And don't call her babe! Did she give you permission to do so?

Eun Ha's heart skipped a beat. 'Actually, she did~ Right? In fact, she's my 'girlfriend' now~' Min Woo said and pulled Eun Ha over and hugged her in front of the twins. Eun Ha pushes him away. 'YAH! Since when am-' before she could finish, Min Woo kissed her on the forehead. Eun Ha stared at Min Woo with wide eyes.

Jealousy and rage grew inside of the twins. They really wanna kill Min Woo. Kwangmin pull Eun Ha into the amusement park while Youngmin followed him, leaving only Min Woo outside.

Min Woo: Yah, hyung! Wait for me! Don't steal away my girlfriend!!

~In the amusement park~

Kwangmin: Yah, Eun Ha, is Min Woo really your boyfriend?

Eun Ha: Him? My boyfriend? IMPOSSIBLE! -stared at Min Woo annoyedly-

Min Woo grabbed Eun Ha's arms and pull her to one side, away from the twins. 'Be my fake girlfriend so we can test out the experiment. You wanna know if they like you right? Then cooperate with me!?' he hissed.

Eun Ha: Oh! I've forgotten about that... Er... so what is your plan? -tilted her head to the right-

Min Woo's heart beats faster but he tried to brush it away. 'Cooperate with me~' he smiled. Eun Ha nodded and grabbed his arm and he blushed.

Eun Ha: Kaja~ Let's ride that roller coaster first! -pointed at a ride- 

She pulls Min Woo over and left the twins behind. 'Is she really dating Min Woo?' Youngmin asked with an annoyed tone. Kwangmin shrugs his shoulder and followed them. Eun Ha sits beside Min Woo and the twins sit together. Min Woo hugs Eun Ha to prevent her from falling because she can't hold the pole with both hands since her left hand hasn't recover yet.

Min Woo can feel the fire from behind him. Yep, the twins are really jealous and they shot deadly glares at him. 

Min Woo: -whispers to Eun Ha- They're jealous now~ -pretends to kiss her on the cheek-

Suddenly Youngmin pushed Min Woo away from Eun Ha. 'Don't get so close to her.' he said with an annoyed tone. Then he sat back and the ride starts. 

Min Woo: *Is she dumb or just too simple minded? It's really obvious that Youngmin likes her