On the June 17 installment of On Style's 'Jessica & Krystal,' Jessica hung out with fellowGirls' 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."

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?