He's not wrong - not only does Sam not fight it, he shifts immediately to tuck himself closer into Bucky's side. Seeking the warmth, mostly. Seeking the comfort, perhaps. Holding Sam close like that means Bucky will be able to feel ever single of the shivers he's been suppressing pretty well so far. There's no hiding the extent of Sam's misery this close together, nor how much Sam needs this right now on more than just the practical level. He breathes a soft, long sigh - supersoldiers run hot. Or maybe that's just hypothermia coloring his perception.

"Nah, man, I'd always come see you. Don't need a reason to pester you."

Entirely casual and matter of fact, like it's nothing. And to Sam, it kinda is - it's just how he works.