Update on this. We did go away recently for a 10-day break by the coast with one of her bulls, a younger man of 33. For the duration they slept together and were essentially the couple, while I was the 'guest'. It was so hot. We had a split level apt, with their bedroom upstairs, me on the sofa bed downstairs. We had outings as a threesome and ate most meals together. In the bar and around the pool or on the beach they were the couple, holding hands, kissing and dancing etc. They were like newly weds, sometimes going back to the apartment in the day for an afternoon fuck while I waited by the pool. The look on her face when she returned, priceless - completely fucked out by his youthful pumping.
They really were fuck bunnies. I could hear them during the night and first thing in the morning. In the evenings, they'd often start to make out on the sofa in front of me and then go upstairs to get down to business. Two nights though I was lucky - they couldn't be bothered and fucked right there in front me. It was so amazingly hot to see her submitting completely to this young muscly dude, moaning unashamedly and holding on to him as he pumped his cum up inside her.
We'll def be doing it again.
That is a fantasy still on our bucket list. Good for you all.!