Old friend

Later today , we will meet up with an old friend , for a drink , who lives out of the area ( 4 hour drive )
A dozen or more years ago , he had sex with my wife , in my presence.
I know nothing will happen , but it will still be a big thrill .
The context is she had known him for nearly 20 years before any intimacy took place . Me longer .

This relationship was a slow burn . We both knew he fancied her .She certainly had a thing for him . Taller than me , a good looker too. Then he divorced .
At a boozy party , I suggested he ask for a slow dance .
I found the sight erotic , winked at him . His hands went down to her bum . She did nothing to deter his wandering hand.
He was flustered, apologetic . I told him no need , give her a good night kiss , out of sight , carry on as he left off, on the dance floor .
They briefly disappeared, then emerged from a shed grinning broadly.
She said the kiss had been intense , enjoyable and she allowed him to feel her breasts .
Soon after we invited him for a meal . It was a flirty atmosphere . We discussed the kiss. After the light meal I invited him to sit next to us on the sofa. She in the middle
He put an arm around her . I said, ‘ you’ will be more comfortable than in that shed ‘
We all grinned
I left the room to fetch drinks .