Sun-burn

I Like To Think Nico Calls Will Sun Burn

And it makes me very happy to imagine the little pout Will makes for the first couple months Nico does this, because he thinks it has a negative connotation. But then he realized that Nico has a /pet name/ for /him/, and he’s suddenly /very/ ok with it.
And Nico really liked how much it annoyed Will, so he was very unprepared for how happy it made him when Will completely embraced a name that he made just for him.