*I recommed whoever comes across this post to watch the movie first! There are spoilers! More importantly, it might not make sense!
She lives in the “now”, while he lives everywhere but the “now”.
Although different in how they hold on to the concept of time, Kim (Emmy Rossum) and Dell (Justin Long) are both very aware of it. They always take things beyond to identify them in time. This influences them to think badly of time itself, namely that it makes everything finite. Kim wants love to be painted like a picture. This reveals her tendency to be less mindful of anything else, but the chances she takes and emotions she follow in the moment. Dell worries about the negative possibilities of the “five minutes from now.” But this only makes him very self-conscious and regretful of what he misses out on. This can be implied in his repeated “joke” about saying, “Where’s my fucking money?” Time is money, so here, he is essentially crying out loud for the time he lost.
Kim and Dell were in love but just seeing it differently. Dell says the most fearful result of love would be to change each other. But they both change from love. Kim starts to see beyond the “now” as she thanks Dell for their past and makes her final decision out of concern for the future (of course, with love for Jack in the present as well). In the very last scene, Dell takes one whole minute to be in the “now” before going to kiss her, regardless of his regretful past or her future without him.
Although the overall image of this film may quite strongly be occupied with the bluish image of the scenes, the dream-like music and strangely charming dialogues, everything ties itself to one another to create one coherent (and indeed, very artistic) story about love. It is about a progress of balancing that comes to a point of stability only after its time has come to an end.
Directed by Sam Esmail. Starring Justin Long and Emmy Rossum.
Also a realistic depiction of love and relationships: Blue Valentine (2010)
With a similar cinematic style: Eternal Sunshine of the Spotless Mind (2004)