Even Korea's leading flower boy, Joo Won, proved that he wasn't immune to the allure of girl groups!

During the latest broadcast of '1 Night 2 Days', the cast member couldn't restrain himself upon the arrival of this week's special guests, A Pink.

The rest of the team, noticing his infatuation, suggested an impromptu game to see which A Pink member would be teamed up with Joo Won for the episode. Although all of the girls did their best in trying to win his heart, he eventually picked Chorong, saying, "I like a person, does there need to be a reason?"

How romantic! Check out some clips from their appearance below.

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