Bromance is strong between NU'EST's Ren and Kwon Hyun Bin.
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Fans caught the flirtatious act of the 'Produce 101' season 2 contestants on Instagram.
On August 22, Ren posted an adorable video of himself with floating hearts, and sweetly captioned, "Good night''.
Kwon Hyun Bin left a loveful response, commenting, "Okay(heart emoji)"
To this, Ren also responded with much love, and wrote, "Ok cutie(heart emoji)"