(FLUUFFFF) Sherlock being shy with flirting, always wanting to touch John or make him blush, but being unsure of what to do. He'll make quiet compliments, talking about little things John does that make him happy. He'll tug at John's jumper to get his attention, tap a toe against the back of John's shoe, or hook a finger into a belt loop. As minimal as the displays of affection are, John always catches them, and reciprocates with a kiss or tries to coax Sherlock to tell him what's on his mind.