Stamina of a God?

What is the longest PIV session you've encountered? I (F29) have my first boyfriend (M28). I know some people just have stamina, but he was i**n me for what felt like hours. This was after multiple orgasms by fingering. Yes, at the end, I was a whimpering mess.

I feel guilt for being fucked so well and getting to recover at home, while he just left for work after pulling an all nighter literally making me scream.

How are his abs not literally seizing after that? How did he get out of bed and go to work? The only explanation is he must wield the stamina of a God.