Cuz it's more edge-gripping... You haven't seen a movie with a love triangle?lol.. makes the watcher think like crazy till they go mad, lol... U can find a lotta that in Korean love movies (which is probably all their movies, lol)... I watched to the beautiful you and up till now I still disagree with who she picked... Tai Joon? Really, urgh... Also, remember twilight saga? What do u think made it sell out more? The love triangle.. duh? Lol... I am a known team Jacob, lol