He could feel the edges of consciousness starting to close in as Natasha fed. The faith he had in her was strong, despite the circumstances and every single instance of faith in everything being for nought. John felt her tug him close and then the pressure on his wrist lessened.
Hearing his name brought an itch to his eyes (not tears - never those!). "Aye, still here, sweetheart," he said looking into Natasha's eyes. He reached up and as though it were simple mayonnaise on her chin, he brushed the blood away with his thumb.
"How are you doing, luv?" he asked trying to muster his strength.