What was it about those words that dug in like tiny hooks all over his skin? Like Steve was suddenly the magnetic pole and he had no choice but to face north, no matter what his instincts were telling him. His face took on a rather hunted expression, though it was muted beneath that stoic mask that hadn't really cracked completely.

If Stark had thought the Soldier was a robot in people skin before, he might be starting to realise that wasn't quite the truth.

"...I belong to them, Rogers." Surely that was obvious. "I'm a weapon, and they're my owners. A weapon doesn't have a choice."

Just ignore that he had chosen to dig Rogers out of the ice and gone fully rogue for the last few days.