Jack dawdled over his morning newspaper and coffee. It was a sleepy Saturday in the early spring, and he and Jill had no plans for the day. She had gone to the market right after breakfast, and he was alone for a time. Getting up and stretching, he walked into the master bath and had a quick shower, then dried himself and slipped into his oversized white terry robe. He went to the computer in the bedroom, which was against the wall at the foot of the king bed, to check his mail, and the usual 90/10% mix of junk mail to real mail flooded in. He clicked through all of the real ones and then deleted the junk messages one by one. Only one of these caught his eye; it was an invitation from an adult service, with supposedly "amateur" models portrayed in "candid" situations.
He knew this was total bullshit, and there was nothing amateur or candid about it. Something, however, caught his eye this time. The featured model, "Candy," was a petite blonde woman about 20 years old with shoulder-length hair. She looked a lot like Jill, except that his wife wore her hair long and bushy on top but very short on the back and sides with a tapered, almost masculine clipper cut. Jill exercised a lot, and didn't want to be bothered with a lot of hair. Even with the slightly butch haircut, Jill was drop-dead gorgeous, about 5'4" with a swimmer's body, but with outstanding tits and ass. Jack lusted for her continually even after 10 years, but there was more and more static between them. He wondered at times if their marriage would survive.
So Jack turned his attention back to "Candy." She was pictured on a tropical beach in a white bikini, with a transparent white sarong around her hips. The pictures formed a series in which the girl gradually undressed, revealing small but luscious breasts with delicate pink nipples. The next picture showed her slipping out of the sarong, and the last one had her kneeling in the sand, with the bikini bottoms lowered halfway down her thighs. Her pussy hair was strawberry blonde and her cunt lips were a shocking pink. She spread them for the camera and tilted her head back from the lens, her eyes covered with sunglasses.
Jack's desire began to stir from within the lower folds of his voluminous terry robe. He'd had a running battle with his wife over sexual issues which usually left him high and dry. Jill's career was getting in the way of their life together, and he had long suffered in silence. However, in recent weeks, he had discovered a new side to his sexuality, and found himself fantasizing about masturbating outside, or doing it with another person watching him. He hadn't done much about it except one discreet trip to a lingerie modeling place in a far distant city while traveling on business. So increasingly, his main sexual outlet was masturbation, which had become routine for him, particularly when Jill was away on her frequent business trips. He didn't usually do it when she was home, out of faint hope that they might wind up in bed, but today he was particularly horny, and he felt the urge to continue.
He selected the last picture, where the girl was kneeling on the beach nearly nude, and double-clicked on it. It filled the screen, which was a large format motion-picture style monitor he used for his writing work. He leaned back in the chair, which was an expensive one in the executive style, and allowed him to recline very comfortably with his legs extended before him. Jack untied the terry belt of his robe, letting the two halves fall to his sides, and his cock sprang free. He was almost totally hard already, and a droplet of pre-come welled up on the tip of his penis. He rubbed it around his glans with a sigh, and focused on the girl on the beach.
Jack ran his fingertips over his nipples, one after the other, which became stiff and pointed with desire. He began to stroke himself with his right hand in long, slow movements; his eyes closed and his head fell back, luxuriating in the sensations of lust. He joined "Candy" on the beach. He lay down quietly on the towel facing her, and the girl did not seem surprised to see him there. He continued to stroke himself, and the girl smiled approvingly. Candy sat back, allowing her to slip the bikini bottoms past her tiny white feet, and off. She threw them playfully at Jack, and the small triangle of satin floated briefly across his engorged cock. The touch of the delicate fabric sent a thrill through him, and his excitement surged.
At that exquisite little image, Jack almost came. He opened his eyes and squeezed the tip of his penis gently and relaxed, which he did whenever he wanted to delay ejaculation. His excitement receded to a lower but no less delectable level.
It was his recurring fantasy, this idea of someone watching him masturbate, and that of masturbating outdoors. The mental image of being naked on the white sand beach with Candy was a compelling one, and he began to stroke himself in longer and slower movements. He was taking something of a chance, in that he had no idea when Jill would be coming back, but when he was this aroused, he didn't care much. Part of his fantasy sometimes involved being observed by Jill, and the thought that she could walk in on him was an acutely pleasurable one.
Jack softly stroked his straining organ. The feeling of the sun on his body was incredibly soft and sensuous. Candy smiled approvingly at this, and lay down on her side facing him, with her left elbow in the sand, and leaned her pretty head on her left hand. With her right, she toyed briefly with her incredible tits. The nipples swelled under her touch as she tinkered with them. Then she slid her hand quickly down between her legs, and inserted her manicured third finger deep into her pussy.
Jack lay on the beach towel with the hot sand of the beach under his back. The sun warmed his cock and he jerked it slowly and steadily, as he watched Candy finger-fuck herself. His climax was drawing near. He began to pull his penis harder and faster, and the palm of his hand grew wet with his pre-come, which served to heighten his pleasure even more. At last, he was at the point of no return in his orgasm. He knew he was going to come, but he resisted it with all his might. He gripped his raging cock firmly and held it tight, pointing his toes and arching his back, fighting the urge to shoot his load. He glanced at Candy, who looked serenely back at him and opened her mouth to speak.
"Don't stop... "
Jack opened his eyes and found Jill standing over him. He was so aroused and so involved, he never realized she was in the room. It was she who had spoken.
"Don't stop!"
And with that, Jack exploded. Jill watched, spellbound, as he fired stream after stream of sperm high into the air, covering his chest and belly and crotch. It seemed to go on for minutes, and his dick continued to contract again and again, long after his sperm fluid was exhausted. Finally, his orgasm subsided. Jill went into the bathroom and ran a washcloth under warm water, then lovingly wiped the mess from his groin and torso, as he began to protest.
"What the fuck are you doing here? I thought you were going off the island for groceries," he wailed, plainly embarrassed...
"The drawbridge was stuck, and I didn't feel like waiting, so I decided to turn back and get the groceries later," she said, calmly.
"I'm sorry... " He started to explain, but she cut him off gently.
"Don't be sorry... I'm glad I found you doing this. I've wanted to talk to you about it."
"About what?"
"About this," Jill said simply, as she slipped out of her sweat pants and hooded sweatshirt. Underneath, she wore a matching bra and panty set in a shimmery, translucent lavender. This color, against her tanned and athletic body, stormed Jack's senses, and desire began to build in him again.
Jill sat on the edge of the bed where she could see the computer monitor.
"So let's see who you were jerking off to... Oh, baby... She is pretty... " Jill exclaimed, as she ran her fingers over her erect nipples, through the shiny fabric of her bra. "Were you away on this beach, fucking Candy while I was supposed to be at the store?" She smiled wickedly at him.
"No, I wasn't fucking her. She was just watching me... " Jack was at sea, uncertain where this conversation was going, but he went on. "I think I like it... "
"Like what, Jack?"
