HIM: I couldn’t have been more vulnerable—naked literally and figuratively.  My face was buried in the sheets, my ass in the air, hands parting my cheeks.  A woman I barely knew was poised behind me armed with a strap-on cock.  Her first thrust was a heartbeat away and my virgin ass was puckered in a knot.  This was not what I signed up for.   HER: Two weeks earlier:  He was always flirty and had a wicked glint in his eye...