In 1992 Tom, my then boy friend, and I went to San Francisco
on vacation and while there we visited an art museum showing
Escher pictures which we both liked very much.  We got there
and the whole  place  was  practically  empty.   We wondered
around  looking at the paintings  and  then  came to a small
room that was off the main gallery. There was a security man
in the main room, but I think he was almost asleep.  We were
both footsore,  so we sat down on a couch in this small room
and talked for a while, and then Tom started to grow amorous
and kiss me,  and squeeze my  breasts  through  my blouse. I
began to get really excited,  and I fondled his cock through
the pocket of his pants, until it grew hard.

I was so turned on that I pulled my panties off and knelt on
all fours on the couch,  with my bare bottom  in the air and
pulled my short skirt up.  Tom  opened  his  pants and knelt
behind me, and pushed in his cock.  We  had  to  do  it very
quietly, or the security guy would've come along to see what
the hell we were doing.   I could hear people walking around
the main gallery too, and somebody only had to walk down our
way to see us doing the deed.   But that was what made it so
thrilling.

I don't think we'd ever made love so quickly.  We thrust and
thrust, and we both came, not together, but almost together.
Then I quickly got  up  from the couch and wiped myself with
my panties and put them in my purse,  then  pulled  my skirt
back into place,  and  Tom  did up  his  pants,  and we went
walking round the gallery. But all the time  I  could  smell
the sex  we'd just had,  and when we looked in the mirror in
the entrance hall, we both looked rudely healthy.

Well that's my story. I have another about the time I shared
my lover  Rob with my sister Alexandria in a  threesome  for
the first time. We still do the deed together as a threesome
from time to time, but that first time was the best.