[All] A love letter I really like

It may be one-dimensional, but a love letter is

'It's been a long time since I've seen such a nice evening with the sunset-dyed sky.'

I often listen to it in the evenings because of the lyrics.

The title and lyrics are about a love letter, but
When I hear it today, it sounds like you're telling me I worked hard today.
It's been a while since I've had a really good evening. You worked hard today too.