It is likely a little of both and he simply cannot handle his reaction as she sinks her mouth lower down his body - his hips rise to press against her chest, 'begging' for more, his cock already aching with want and need.

And with her voice at his ear (how is she doing that, he isn't sure, he doesn't care) whispering to him in that manner...

The muscles of his abdomen tighten as she teases him - he is strong and lean, and while he may not look as if he is built of stone...

"Kreyu," he begs softly, fingers twisting into the blanket beneath him as he rocks his hips against her. "Kreyu, please don't stop, that is...that is so good. You are so good to me."