That was vaguely uncomfortable and Natasha stood, not knowing how to answer. She wasn't used to caring about others -- and certainly not about them realising it when she wasn't willing to voice it. She wanted Bruce to stay -- hell, she'd been terrified when she learned what had happened -- but to hear him say it like that left her feeling exposed. Vulnerable. She didn't know how to react.

And so she didn't.

"Get some rest, Banner. We've got a few hours yet before landing."