Hmm...maybe Nana reminds him of someone...
Could it be that Nana's mom is somehow related to him? Like stepmother? Hmm...
Hahaha...watched too many dramas and my mind starts to come up with all kinds of possible scenarios!
Why do I feel he was flirting with Nana about compensate his shirt. Seems he loves his wife also. I'm curious what kind of secret his wife have that lead to their wreck marriage.