Have you read this?
I’ve randomly remembered a fic I read a long time ago that I really enjoyed. Dean and Cas are both single dads. Dean’s daughter is Charlie and I think Cas’ daughter is Claire. Cas set Dean up with a dating app— it may have been the other way around, I can’t remember. Dean starts to call Cas and debrief him on his dates and Cas does the same. Eventually when one of them calls the other to tell him about his date, it turns into phone sex. They start dating etc. etc.
Another specific scene I remember is the girls getting to stay home due to a snow day so they all hang out together. I’ve combed through my history but I either over looked it or it was deleted