Navi revealed the struggle she had with her boyfriend Jang Dong Min because of Block B's Zico.  

On 'Happy Together 3', Yoo Jae Suk made a comment about Jang Dong Min and his girlfriend as he said, "I recently heard that Jang Dong Min and his girlfriend got into an argument."

Jang Dong Min then answered, "We did not fight." However, Yoo Jae Suk didn't believe him as he said, "It's okay for couples to argue." He then startled Jang Dong Min as he called Jang Dong Min's girlfriend, Navi, on the spot. 

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Navi answered and said, "Since we are a couple, we do argue from time to time. But we haven't made up for our last argument yet. It's nothing big. We got into a fight because I said 'Zico is so cool.'"

She added, "It was a small fight, and we usually get over it pretty fast. I was debating whether or not to answer this phone call, but I wanted to tell him I was sorry. I am sorry for the fight. I'll buy you soju later on once you're done recording the show."

Jang Dong Min then jokingly said, "I accept."

Looks like Jang Dong Min got a little jealous of Zico, but what a cute little love fight.