The two artists have been seen together on several shows before. Kim Heechul and Momo, popular in their own right, have been seen together in several shows before. Momo, who hails from Japan and is a professional dancer as well, is 13 years younger to Heechul.
Fans though are just happy that two have started dating and are ready to ignore the age gap between the two.
On Thursday, 'Momo' became a Twitter trend worldwide as fans woke up to the news.
Interestingly, JYP Entertainment, which owns label TWICE, had a ban on dating for its artists earlier. The ban was eventually lifted last year when the news of TWICE band member Jihyo dating K-pop idol Kang Daniel came into light.