What stuck out to me was how broken they both were when they met. They were both band aids to each others' brokeness for a time but it didn't last because it never does.
I found it incredibly sad and a very good depiction of the slow erosion that occurs when limerence wears off. It had died a quiet death long before they realised it.
The ukulele scene is beautiful but I found the rest quite painful to watch. Her emotional numbness and his alcoholic numbness were a little too close to home.