Dedicated to my observant Veronica. Well deduced. ;)
"So your date didn't go well then?"
John glared back at his flatmate, the curly haired man that was currently invested in a complicated looking experiment.
"Just because you know these things doesn't mean you get the right to point them out." John growled back.
He sat there quietly for a second until his curiosity itched too much for him to ignore the question.
"Alright how did you know?" He sighed. Sherlock smirked and then proceeded to explain without even looking up from his lab equipment.
"When you've come back from a particularly awful date you always stop by to inform Mrs. Hudson of the failure, also this time I noticed that you took a rather small amount of cash meaning this was not someone you cared enough about to take somewhere nice. You didn't want to go out with her at all so you were probably put up to dating one of your sister's lonely friends. Also you're still favoring your leg where she kicked you. I assume she was simply as insane as Harry Watson and that you did not provoke the attack what with you being such a gentleman."
John rubbed at his temples and sighed. There was nothing he could hide from this man. His every emotion and movement was common knowledge to Sherlock Holmes.
"Simple enough for anyone who has the capacity for observation." Sherlock grinned with cocky attitude.
John glowered at the taller man.
Two can play at this game...
"Well I can observe too." He shrugged.
"Oh?" Sherlock looked up, suddenly John was the more interesting experiment in the world. The consulting detective removed his goggles and walked over to sit next to John, wrapping his blue bathrobe around himself.
"Yeah." John smiled.
"Alright then. Impress me." Sherlock challenged.
John thought for a moment and then looked at Sherlock.
"Well...when you've found something really interesting your eyes light up and you get all twitchy with energy. Sometimes you pace, mostly you just become completely intolerable to everyone around you. Of course when you're not on a case it's the complete opposite and no one can convince you to do anything but lay around. You're still intolerable though."
"That's not exactly observant, John." Sherlock rolled his eyes.
"I'm not done yet!" John insisted. "Your hands shake when you want a smoke, and when you're tired but don't want to admit it you lay on the couch and insist that you're thinking. Sometimes when Mrs. Hudson's made biscuits you find an excuse to walk in and take some, even though you never eat ever because you think you have more important things to do."
"Go on." Sherlock's mouth twitched with amusement.
"Sometimes when people call you a freak you pretend to brush it off with something sarcastic but your eyes get dark like you're sad."
Uh oh...am I going too far? John thought seeing Sherlock wince slightly.
"A-also..." He continued only slightly unsure of himself. "When you're angry you start treating everything like the person that offended you. You shove things around and slam things down. When you play violin it reflects your mood, I can always tell how you feel just from what you play...and your eyes...your eyes are so expressive and intelligent..."
Sherlock cocked his head to one side, and John couldn't be sure but he suspected he saw a light blush fall on Sherlock's pale cheeks.
"John...how do I feel now?"Sherlock asked, his stare intense. John thought for a moment, then he reached forward and gently grasped Sherlock's pajama shirt in his hand in order to pull the detective closer. Then he brushed his lips slowly against Sherlock's.
"You feel like going out with me later today. I think I could use a better date after the girl Harry sent to kill me." John smiled and ruffled Sherlock's hair before making his exit, leaving a bemused and happy Sherlock behind.