Consolation

Faced with spending Christmas Day alone watching Christmas repeats on telly, Greg Lestrade decides to check on Sherlock, because he’s alone too, isn’t he?

Based on recipient’s prompt: 2. Sherlock and Lestrade get closer after Sherlock's return, when Sherlock has to face living alone again. Bonding, gen or slash. I'd love it if Sherlock's later decision to move to Sussex coincided with Lestrade's retirement from the force.