Martin smile warms and he takes a moment to just breathe and enjoy this, holding John and being held in return. He lets John kiss him, tipping his chin up obligingly, humming softly against his mouth.

But there are still fragments of the day that cling to him, the smells and the awful sense memory of suffocating pressure, and now that John is calmer, it is more difficult to keep it all at bay. He lets some of it out in a soft puff of air and an involuntary shiver, and turns his head back down, curling in close against John's chest.

"S-sorry," he murmurs. Christ, the last thing he wants to pitch John back down this path with his own lingering anxieties. "I'm okay."