it all depends on how deprived i am. due to my current situation my gf and i have a hard time seeing each other so if it's been a while i cum quick the first time. but i last longer after that first one of course, so she usually likes to suck me first. but if we've had sex in the last few nights...well let's just say ' i can last all night' has a meaning to me. i've made her nearly pass out in pleasure before as she's cum time after time, but i've yet to. so it all partially depends on the body i think as well as the mindset.

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Over the Mountains and Through the Trees
Does the Single Echoing Voice Howl,
And Out of the Shadows Steps the Lone Silver Wolf
Singing Through the Divine Forest On his Nightly Prowl.