I know this isn't right, but you drive me crazy.

Jessica likes Donghae, she loves him, she wants him, she needs him, but she can't have him, he's the boyfriend of her bestfriend Yoona and she can't do that to her.

Donghae likes Jessica, he's dating Yoona because he liked her in the past when they meet, but like a year ago he meet Yoona's bestfriend and he couldn't take it, he just fall in love. The only thing that he wants is be with Jessica, he wants a chance, just for one time.

Somethings are bad, but for them, bad things are good.