After she collapses, he flops over on his back - managing somehow to tuck his wings enough that they won't cause discomfort for him to lay on them - and pants softly as she works to 'cut' the spell off. His skin is sticky with sweat, and he is completely and utterly exhausted, in a good way.

(A very good way, based on the pleased expression on his face as she turns over and reaches out for him, pulling her closer to cuddle.)

"C'mere, dragon," he drawls playfully, stretching his legs out and adjusting their bodies to settle into the cushions. "Lemme hold you."