You can imagine what was happening to my cock. It was as hard as Phil's and it was very tempting to reveal myself and ask if I could join them. However I knew that this might then be the end of the relationship and at that moment I wanted it to go on forever. I could see Jan cup her hand under his balls as she so often did to me and run her fingers up Phil's shaft. I so wanted that to be my own shaft but this was too good to miss watching. After a while I could see that the tension in Phil was going to be too much and suddenly there was an explosion of cum from his full cock that shot in the air and all over his naked chest. I saw Jan rub it into his body with her hand, especially around his nipple area. Phil was done and I knew I would need to creep upstairs again before they saw or heard me. However before I went I heard Jan explain to Phil that she had only done this to ease his sexual tension and that she didn't want it to go any further. Within 5 minutes I heard the door slam and a few minutes later Jan came to bed.
Of course after this my trips downstairs became more frequent. I tried to make the journey almost as soon as it would have been obvious that I had put the light out in the bedroom; I didn't want to miss a thing! However nothing more happened for several days and I begun to wonder if it was literally a one-off. About 4 or 5 days later, though, I was in my usual place when Phil, minus his shirt, asked Jan whether she would mind him lying on her breasts. Usually there was this pillow between his head and Jan's lap so I expected that Jan would have refused, but, much to my surprise, she instead said that he could. This meant that instead of sitting on the sofa normally Jan had to lie on it, and effectively Phil had his head sideways on her breasts, fully clothed of course, as I imagined. She was wearing a blouse with buttons down the front, slightly low-cut, enough to reveal a small amount of cleavage. As I gazed on, though, Jan began to undo her top buttons and I saw that she was lying there with no bra on. Phil began to gather that he was getting access to more than he had thought and soon found he was lying on those lovely curved boobs that I had so often stroked myself. As the realization dawned on him he began to turn his head and kiss her nipples. I could see that they became erect immediately and glistened under the soft lights. Phil began to undo the remaining buttons until he could part the two sides of her blouse. I saw him bury his head in my wife's breasts kissing them and rubbing her upper body with his hair. Soon they were kissing one another passionately. I often think that kissing is greatly under-rated when I have read erotic stories or seen films; for me it was the ultimate joy to see Phil's and my wife's tongues darting in and out of one another's mouth, Phil's strong, hairy chest pressed against Jan's firm breasts.
It seemed an age that I was there watching Phil's lustful body held against my lovely wife. My penis was in seventh heaven and I was rubbing it against the curtain to get my juices running. Phil pulled Jan up from the sofa, turned her round and cupped her breasts in his arms, kissing the back of her necks, biting her shoulder and back gently. He told her to close her eyes and then he took down his pants and underwear, once again revealing his fantastic specimen of an erect shaft. Then he undid the catch on the back of her short skirt and let it fall to the ground. He began to nestle his huge cock between her lovely buttocks and I could see his pre-cum start to dribble down from the top of the slit. I guessed that, by this time, Jan was going to want that huge tool between her legs so she herself pulled down her own panties and turned around to face Phil's manhood. I could hear her gasp. Although she had masturbated him a few days before, I think to see it in all its magnificent, stately splendor was just too much for her. "Would you do me the honor of taking me Phil" I heard her say. "My husband's penis is lovely but yours is just fantastic, and I want to feel its length inside me". With that she laid on her back on the floor with her legs wide apart and Phil kneeled between her legs and slid his already juicy cock between her welcoming thighs, collapsing his strong, manly body on her willing frame. They were kissing so passionately. I just loved to see my wife so enjoying another man -- it was without doubt the most wonderful moments of my life.
They must have been there for 10 or 15 minutes, Phil sliding his massive length in and out of her juicy cunt, his balls flapping against the underside of it. She was moaning with ecstasy which increased as he slid one of his fingers alongside his penis as it thrust in and out of her. I have learned over the years when Jan is about to orgasm but Phil also seemed to know instinctively, belying his seeming difficulties with other girls. As he withdrew his finger Jan placed her own finger alongside his throbbing cock as it pursued its relentless journey and that was enough to tip Phil over the edge. The thought that Jan had managed to help Phil overcome his difficulties and bring him to this wonderful climax was enough for my wife to give in to her heightening desires and they both emptied their sexual tanks together in an explosion of lust and desire, kissing each other with even more passion as Phil's love-juices invaded her inner body and Jan's own ones were released with orgasmic intensity. They collapsed together in an emotional heap, Jan trying to get every drop of his cum inside her. I was so delighted to have witnessed my best friend invading my beautiful wife's body and seeing her so fulfilled with this younger man's vitality and passion. I knew that life would never be the same again and as a result I hope to tell you of further days and nights of passion which I have witnessed since.