There comes a time when you possibly need a moron to help you with girls, that moron would be Im Yoona. I'm not going to lie when I say she's somewhat attractive, but she's not someone I would rely on since she's so... crazy. But, I guess, she's a decent person to get some help from, I guess. She's probably going to screw me over though. Meh, whatever. 

"Shim Changmin, do you want my help or not?" 

Jung Jessica could somewhat be in love with Shim Changmin, but Changmin needs help. He wants to know if she really does like him. And his bros aren't ing him over. And who else can he rely on? Not Choi Sooyoung because she would tell, not Kwon Yuri because she's a blabbermouth, and with all the other girls, well, he's not close to them. So, there leaves one girl, the one and only, the big mouth, laughing maniac, one of a kind, Im Yoona. Well, isn't he screwed?