*Robby cutting Jack's shirt open you know he's not going to let anyone get to Jack before him
ROBBY IS PUTTING HIS YEARS OF YOUTH BASKETBALL (headcannon) TO USE AND BOXING EVERYONE OUT
like I know they probably got a heads up before the ambulance pulls up (perks of being an attending attending his own ED) so Robby's already pacing like a german shepherd in the ambo bay.
But when they wheel him into the trauma room and they need to cut his shirt off... God save Robby's last shred of sanity. He's grabbing the scissors before anyone else can assess the damage. With every inch of skin revealed, Robby's medical brain and his human brain start fighting for dominance.
Until all he's thinking is, This is not how i imagined I'd get to see Jack's naked chest.
He's diligent and quick, making sure all life/sanity saving efforts are happening to make Jack comfortable. He doesn't allow himself the chance to savor Jack in all his toned glory.
In the end, the last thing Jack needed to calm down was Robby's hands running through his curls and his voice reassuring him he'd be ok before the sedation kicks in and bring him peace.
When he wakes up, neither one of them can deny the feelings they have are way past friends. Robby definitely sees his chest again soon, and in much better circumstances.