Kyle was mortified. He was also very angry and deeply hurt. "How fucking dare she do this to me!". His first instinct was to pick up the guy's clothes and throw them out of the bedroom window. Then he paused for thought. Hadn't he done the self-same thing for the last three days? Fellated by two men and a woman, twice to completion and cum inside a man's arse. Never had he been filled with so many mixed emotions. He also realised that he was sporting a semi in his suit trousers, brought on after he'd sniffed his wife's knickers. Was it the familiar smell of his wife's vaginal juices that caused it or was it the aroma of male semen?
Then he heard the man's voice: "I wish you'd let me fuck you."
Sienna replied: "I can't, John. I feel guilty enough already. It would be a complete betrayal."
"Well, at least bring me off again. I got so turned on before just rubbing up against you. I came in my pants!"
"And on the outside of mine. And I was still wearing them."
"Go on. Toss me off while you describe Kyle's cock to me. Are you sure he isn't bi - or at least bi-curious?"
Kyle's cock was now rock solid again. With his back against the bedroom wall so as not to be seen by the occupants, he carefully sidled up closer to the glass door to hear their conversation clearer over the sound of the cascading water from the shower.
Sienna gave the reassuring reply, to Kyle's ears at least: "Not that I know of. I'd love to see him and another man getting it together. It would be such a turn on."
Through the rippled glass Kyle could see the distorted image of Sienna's hand moving in rapid strokes at the front of the man's body.
"Oh lovely!" he sighed. "Do you do this to Kyle?"
"Quite often. He loves it."
(Between gasps) "Is his cock as big as mine?"
"Not quite. But it's a beautiful cock and he knows how to use it."
Oh, fuck. I'd love to see that. Slow down a bit."
Kyle, now fondling himself, suddenly realised he recognised the man's voice. The guy in the shower was one of the gay couple Sienna was friends with - only this half was obviously not totally gay. What came out of Sienna's mouth next both shocked and excited Kyle.
"Well, finger me, you selfish bastard!"
Kyle heard that familiar squeal when he frigged Sienna. Again, the green-eyed monster reared its ugly head. Her cunt was reserved for him! But as he listened to the sounds coming from within the glass cabinet the emotions created in his brain were over-ruled by the feelings lower down his body. Fuck, he was really horny now. She was wanking a man with a bigger cock than his, while being masturbated by him.
Never had Kyle undressed so quickly. Within seconds his clothes had been flung off and on to the bed and now stark naked, he slid open the door and stepped into the shower with a facetious: "Hello, darling - I'm home!!"
The reaction from Sienna and John was stunning. Sienna screamed and backed into the glass wall crying: "Oh, shit! Shit! Shit!" John's back hit the opposite wall and he immediately covered his genitals with his hands. "Christ, Kyle! I'm sorry mate!"