WARNING: 'tasteful' nudity, NSFW (there's boobs)
The story of this couple is so poetic it feels like something you'd read in a book or see in a movie.
They had been friends, working together and creating art together. Eventually they fell in love and of course became lovers. Years later when they could feel their relationship coming to that inevitable downward slope, they decided to end it in a bittersweet way and part ways before their relationship grew sour.
So they traveled to China, went to opposite ends of the great wall and traveled along the great wall separately until they met in the middle. They said their last good byes and parted ways.
Fastforward into the future, and you get this video.
Edit: I'll also add that they were together for about 15 years, and hadn't seen each other for over 20 years when they met up in the video x.x