Oh. Oh his heart must betray him in this moment because he softens, much more so than he had before. It's such a tender thing, the kiss, and Martin is stunned for a second. How can one act seems so soft? So final? Like it assured him that yes this was real, this was happening, that Jon wasn't just--

Martin realizes that if he keeps staring stunned it might seem awkward and carefully, oh so carefully returns the kiss. As if he doesn't take care it's all going to disappear on him.