Grimm's Links
Simeon punched Grimm in the face when he was mad once. Grimm started crying a lot which led to the two of them having a really emotional conversation. Grimm sometimes sends Simeon letters to see how he's doing.
When he punched Grimm, he quickly realized he might've fucked up but instead he got an actual friend. Simeon enjoys the letters from Grimm but rarely sends his replies as he doesn't want to worry his friend or even lie to him.
He has tons and tons of letter drafts, he would be embarrassed if anyone finds them.