The ending!

Such a good ending in my own opinion. Forcing a relationship will just end up with hatred and misery. It's an open-ending. If Xiao Nou heals before Mo lose his affection and find someone new, they can go back to the beginning and slowly forge the relationship. If he doesn't, a lot of people still loves him, and Mo is slowly building relationships with people that will surely care for him for a long time, including Mo's mom. They will find their ways one way or another, and they ended in good terms, so they will be at peace.