This is the segment where they were talking about the people who they invited.. ^^
According to KeepLovingJi Leadah at the comments section, this is what they said:
Kangin: (to Donghae) Who did you invite?
Donghae: I invited a friend since high school, 2NE1 Sandara Park-shi!
/suju dance to IATB choreo/
Leeteuk: Sandara Park’s brother Cheondung came right?
Donghae: He’s not here!
oh-dara.com 
Comments on: "Video: 140921 Super Junior’s Talk Section at “Super Show 6” Where Donghae Mentions Dara" (16)
I hope this two is real. Donghae was so brave to mention dara’s name infront of many people ^^ I hope they will get married after donghae military service.
I’M A DARAHAE FAN MY 2 FAVORITE K POP IDOLS.NICE FRIENDSHIP FOR 10 YRS, PLEASE DO WGM OR ROMDRAMA TOGETHER.LOVE U GUYS KEEP THE FRIENDSHIP GLOWING FOREVER
His group has always known of his fascination with Dara, right? I admire Dong Hae for declaring his friendship with Dara to the Kpop world and bravely to the Suju fandom! Possibilities! DH is one up those who just admire Dara from a distance! Could be the start of something new! Happiness!
they are just friend and nothing , best friend for ever,,, EUNHAE for ever :p ❤
he’s a real man. i like now, for dara.real man .
Yessssssss!! Finally someone brave enough to show his close relationship with Dara. I know that female idols in particular get flamed for these kinds of public displays of affection(despite saying they’re just friends) but I am so proud of them both (two veeeery famous idols) for showing/sharing this to us KPop fans. It’s such a refreshing feeling. 🙂 bless them
and now it’s really confirmed!! Darahae Confession at StrongHeart ! weeweetttt!!ok bye for now coz ill gonna watched it again! DA MOMENTS OF..DARAHAE DARAHAE DARAHAE!!!!! =)
So brave of Donghae haha!
here’s a new video…can somebody translate this?
Thank you!
so what is it? was it just a joke or Dara really went there?
notice how big his smile was when he said he invited dara? hahaha spazzzzzzzzzzzzzzzzzzzzzzzzzzzzzz
Gasp…I love this friendship. I like that Donghae seems to be proud of saying that he’s friends with Dee.
i like donghae…he’s brave for saying that…
my gosh darahae 🙂
OMG! this is sweet..keke