My late wife and myself where swingers, had a bloody great time too., the green eyed monster just did not exist for us. One night i had this lady naked and hands on the bedroom wall. "dont move i said, i will be right back" (always have to go the loo at the wrong time lol) when i returned she had not moved, i mean not one inch, as i looked at her very nice bum my cock got right back in the game so to speak.
It struck me as odd that she had not moved, never been involved with BDSM i was a tad slow, i gave her peachy bum a little tap.
"good girl"
She gave a very low mmmm sound and moved her bum out further, even i was not missing that invitation, so i delivered a couple more, harder than the first, the mmm became a moan
"you can be as hard as you like"
Well i did, her bum turned very red hot, never encountered this it was more power than finese, i reached between her legs and met a river, three fingers slipped in very easy indeed.
Well we did fuck, all ends up so to speak, i told her that was the first time i had ever done that, she leaned over and pulled my belt from m trousers.
"try this"
I started gently but with her guidance got harder and harder, as did my cock, we fucked again after that, but from that encounter i was hooked, the sheer erotic power of it all had me going in a whole new direction.
Over the years i homed in my skills, but i will never forget the night i simply said
"dont move"