I shudder and moan around his cock as my orgasm hits hard, waves of pleasure washing over me. I suck him clean, enjoying every last drop before pulling back to look at him. His eyes are closed, a contented smile on his lips. He's the only one who understands how much this means to me, and for tonight, that's enough.
I lie down beside him, resting my head on his chest as I listen to his heartbeat slowly return to normal. "Thanks again, grandpa."