The Korean man in this video isn't the first person to propose to his girlfriend using Post-It notes -- a quick Google search reveals plenty of people got there before him. Digital agency Innored, Seoul and 3M banked on this suprisingly hearttwarming use of the brand's product -- and what now must be a socially acceptable way to ask someone to tie the knot -- by creating this moving film tying in a new slogan, "Connecting the heart."

In it, the man takes his girlfriend to a high-rise cafe in Gangnam, Seoul, where he asks her to look at the skyscraper across the way. There, she sees 300 people place Post-It notes against the building's windows, ultimately displaying his request for her hand. Viewers just might join her in shedding a tear. Only a week after going live, the ad has already had over three million views on Facebook and YouTube, with 2,500 sharing it on Facebook on just one day.