My wife and I married while in college. We were both pretty sexually inexperienced with little outside each other. We had no money and lived in a very small apartment but at the time I though very happy. We both had part-time jobs so we had little free time or money for going out or taking holidays. Our primary night out or afternoon out on weekends was to visit a little bar nearby and have a few beers and listen to music.
One such evening we struck up a conversation with an older man seated on the next stool. He was nice looking, I wouldn't say handsome, tall and slim. He appeared to be late 40's or early 50's but came across younger more vigorous and fit than typical in our experience. He was well dressed but not flashy and an interesting conversationalist. As he was about to leave he said "Why don't you come over to my place tomorrow and go for a swim in the pool". Not having had the opportunity to do something like that in forever we quickly agreed and he gave us the address.
The next day we drove over and as we pulled to the curb in front of his house both our jaws dropped. The place was a mansion! He greeted us at the door in swim trunks and showed us where to change. The pool was beautiful, the water just right and we had a very relaxing and comfortable day in the water and longing beside the pool with lots to eat and drink.
Before we left he invited us to come over on Friday evening, our night off, for dinner and a movie. That was even more enjoyable as he had a great home theater. Over the next month we came over 3 or 4 more evenings or afternoons all very enjoyable. By that point we were both feeling very positive and grateful toward him for the chance to enjoy these luxuries periodically.
One night as he started to select a movie he turned to us and asked if we would like to watch some "sexy films" as he phrased it. Since it was his house and we were guests we said sure and he selected a couple and started one up. It was definitely sexy, more specifically pornographic with lots of fucking and very large cocks being sucked by women with very large breasts. It was arousing though, I would have to admit, and that night when we arrive back at our little apartment we immediately fell on the bed and screwed like crazy.
From that point viewing porno movies became a regular thing and it was soon apparent that he was becoming very aroused during each one, his erection clearly visible through his snug slacks or shorts. One evening as we were watching a particularly erotic scene of a woman on her knees with two men having her mouth and pussy at the same time he turned to us and said, "I can't take it any longer, do you mind if I masturbate?". We looked at each other with wide eyes, and finally my wife stammered, "no, it's ok if you need to". "Thanks" he replied as though he had asked her to pass the salt.
He pushed down his swim trunks and his fully erect cock popped free. He was not circumcised and he pulled back the foreskin to reveal a wide purple flanged glans already glistening with pre-cum. He began to slowly stroke himself as he watched the action on screen. I glanced at my wife and saw that she had lost all focus on the movie and seemed transfixed by the sight of his cock in his hand. After a few minutes of stroking he moaned, pushed his hips forward and ejaculated a thick rope of cum that reached up to his bare mid-chest. The first was followed by 4 or 5 more jets of his thick hot semen. Although I heard a sharp uptake of breath from beside me I could not take my eyes off that amazing climax.
The next day I told her I felt we should not go back to his place again, but she said "I think it's ok we didn't do anything and he didn't ask anything of us. Besides I really love the place the dinners are great and the pool is wonderful. I would hate to give it up for no reason." I said ok but still wondered about that little gasp I heard when he came.
Over the next couple of weeks we were "treated to, exposed to, witnessed" several more times where he masturbated in from of us without seeming to be in the least affected by our watching. Although we never discussed it, it was clear we both found it highly erotic and we progressively began to watch him more openly as he stroked himself to ejaculation. One evening just after he had taken out his cock and began to idly flex it back and forth he turned to us and said "why don't you come over and sit beside me, I have seen you both watching me so come over here and have a closer look."
He was sitting in the middle of the couch and his voice, though not a command, was firm yet inviting. I was surprised as without even looking at me my wife moved to stand. She looked down at me and then at him and said "Okay". She walked over and sat beside him on one side and half turned so that she was leaning against the cushions facing directly toward his swollen erect cock.