When he realized Sam's intent, G tried to uncross his arms to hold the other man at bay. There were few things G couldn't fight, had no defenses against. Sam's ever present concern and caring directed at him, the strength of his partner surrounding him and holding him up, those were things that seemed to reach right through whatever defenses G had built around himself, his emotions, and pull everything out he so desperately tried to run from as fast as he could. His hands trapped against Sam's chest, G struggled not to give in. But it was a lot harder with Sam actually holding him close, more difficult to hold himself stiff and aloof when his instinct was to let Sam support him for just a moment until it didn't feel like taking too deep a breath would break him.
Eventually, instinct won out and G let his head fall forward onto Sam's shoulder, hands clenching into fists against Sam's chest as his own shoulders shake with the continued effort of not giving in further to the emotion threatening to tear him apart. It had been too many years since he'd lost someone he was close to this way, not even Macy or Dom's deaths had hit him like this. G didn't know how to feel lost.
"I don't know how to be okay," he said finally, voice low and broken. "It doesn't seem real." Hetty was supposed to always be there, like Sam and this tenuous family. If Hetty could be lost, how could he count on anyone of them making it out alive?