On the June 17 installment of On Style's 'Jessica & Krystal,' Jessica hung out with fellow Girls' Generation members Hyoyeon and Tiffany as they flipped through a dating psychology test and divulged their dating styles.

Hyoyeon said, "What would be a good and touching present to give your significant other on a celebratory day? �Album production for just the two of you, a moving handwritten letter, a vacation for just the two of you or a special party."

SEE ALSO: K-netizens realize the average of Girls' Generation is 35 but none of the members are married

Unsurprisingly, attention was focused on Tiffany (currently dating 2PM's Nichkhun), especially as she said, "There was a time I did something similar to the second one, [a handwritten letter]," surprising the other two. �As the atmosphere got strange, Tiffany yelled, unable to stifle her laughter, "You can do that because it's a commemorative day."

Hyoyeon said, "At this age, it's a problem if you didn't get to date even once." �Tiffany said, "I don't think I should talk."

Do you think the event that Tiffany mentioned was for Nichkhun?