And you can stay over as long as you want after they go to sleep, so long as they don’t ask you to leave. And they tell the SAME DAMNED JOKE all the time!!!
But don’t hit on the wife/husband while the spouse is in the room. Then the slappin’ starts. Just invite them over singularly and you can steal them away if you wish.
And don’t feel miffed if you call and they don’t answer, or you ring the door and they don’t open it. They’re probably involved in a long, brutal session of cleaning up four plates. Or working out.