"Then we'll have to be sure you can take my cock, with three of my fingers." Nice, deep, smooth strokes now. "We'll work up to it. I won't hurt you."

Soft kisses on forehead, cheek, jaw. "Gently, carefully for you. Nothing but pleasure. Noooothing but pleasure."

It's as much to coax him toward orgasm as reassure him. Overwhelm him with sweetness and care. Nathaniel isn't anywhere close to being hard again, so this is his own release, this feeling, this outpour of tenderness.