As prompted by Sofia Michelle, #424 but vice versa- badboy!Blaine and nerd!Kurt :) Enjoy!
Receipt
"You have really lovely hair," Blaine says with a smirk, squirting shampoo into his palm.
"Th-thank you," stutters Kurt, looking at the ceiling sheepishly.
Blaine's hands sink into Kurt's hair, lathering up the shampoo in a gentle way you wouldn't expect from a guy with that kind of tattoo on his muscled forearm.
"I'll have James show you how to style it better once it's cut," he hums, massaging Kurt's scalp until he gives out a little choked-back moan of pleasure. Then he grins and washes away the shampoo, getting the conditioner next. Kurt's hair is incredibly soft between his fingers; he wants to play with it, wrap it around a finger, tug on it playfully… Don't get ahead of yourself.
Blaine starts washing away the conditioner, looking smugly at Kurt's slack expression of bliss, and thinks to himself that yeah, it's definitely acceptable to write his number on Kurt's receipt later.