On the August 19 episode of 'Knowing Brothers',Girls' Generation's YoonA revealed the actions that men do that moves her heart.
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In the clip above, YoonA asked the cast of the show, "Which actions do men do that makes my heart flutter?" with a hint that it involved when having a meal.
To this, many guesses flew out. Everything from providing her with tissues to making her pay for the meals. Seo Jang Hoon eventually guessed it correctly by saying, "When a man presents a set of utensils(spoon and chopsticks) for you first before eating."