After Donghae wrote the song he went to hes bro eunhyuk he was talking to him about hes only true love ...Yoona

Donghae: Hey am done with the song do you want to listen to it??

eunhyuk: OKay

Donghae: (starts to play hes song he wrote to yoona when he saw her with lee seung gi  of course he was really sad)

eunhyuk: I love it hae are you okay?

Donghae: Nope it is just that i saw them together...

eunhyuk: yoona and lee seung gi???

Donghae: yes and i cant get her out of my head i try to do everything but i just cant stop thinking about her.... I like her seens she came to the company she was my ideal girl i just wish that she will come back to me yoona