Jim's height has never been a problem. What he lacks in physical strength he more than makes up for mentally. Case in point: that smug bastard Carl Powers. He certainly hadn't been dangling Jim upside down for his lunch money as he drowned. He's never needed physical strength to coerce someone into doing his bidding or backing off. So no, Jim's height (or subsequent lack thereof) has never been a problem.

Then he meets Sebastian Moran and everything goes to hell. It isn't even just the height thing that makes him angry, it's everything else. Sebastian makes Jim feel things. Things he's never felt before and it's starting to freak him out. The only emotions used to feel were anger, and the heady rush he gets from watching another creatures suffering. Not anymore. Now whenever he thinks about Seb he gets an awful feeling in his stomach, like his body doesn't know whether it wants to vomit or jump for joy. It's awful and he hates not feeling in control of his own body. He decided he needs to keep a closer eye in him, not because he worries about him or anything, it's just that Seb is excellent as far as hired assassins go, and good help is so hard to find these days.

Then the pool happens and Sebastian corners him in the car and kisses him all the way back to Jim's flat. Which is nice, except that they get out and continue to kiss and he has to stand on his goddamn tip toes to keep their mouth connected. It's degrading. He's Jim fucking Moriarty. He most certainly does not stand on tip toes. For anyone. Except that apparently he does.

They're lying in bed (their bed. How the hell did that happen?) after a very successful bank heist and Jim is lightly tracing the scar the runs across Seb's left eye when he realizes he's in love.

"You're staring again." Smartass. Maybe he could kill him and find a way to keep his body warm and preserved so he doesn't have to deal with Seb's cheek.

"Are you supposed to be asleep, darling?"

"Aren't you?" Touché. He's about to fire back with something witty and cutting but Seb chooses that moment to lean over to kiss Jim's nose and pull him closer and the comment dies in his throat.