Spencer gets hurt. Spencer gets hurt a lot. Generally, Sam is there (because she basically lives in the Shay loft) and she takes part in comforting him. It's really easy, she just runs her hand back and forth across his back methodically.
One night they're next to each other watching a movie, and he's leaning forward. Unconsciously, Sam reaches her hand out, tracing random lines on his back, using her nails and then her whole palm. It's calming. Eventually she stops, but by the end of the movie she finds herself curled up against Spencer's side, his arm around her.
A/N: Written with others. More to come. (mostly other fandoms)