One Day (2016)

In Theory of Love, there is a pile of movie references, among them, One Day.

On the other hand, both productions tell a story about unrequiment love.

Both of the movies are about a geeky IT employee who likes their pretty co-worker. They both don't have the courage to confess to the woman, so they admire her from afar. On a trip, both women lose their memory, and the geeky IT male lead has the chance to pretend to be the girl's boyfriend for the time being.

In addition to the similarity of the male actor, the movie presents the same feeling in his stories