Now Amy did collapse to the floor, though slowly, desperate to keep her hand in his.  She moaned, first in disbelief, then in sheer pleasure, the sensations of the lens filling her again instantly.  She had just enough time to give the young man a look of infinite gratitude before her moans became cries, and she began to feel the first throes of the orgasm she craved, writhing and losing herself utterly in the pleasure, forgetting her audience and the hard floor and everything else.