The first time they heard it Lara and Francis were in bed and just drifting off to sleep.
"Come on, Mariotta, didn't you hear them? Didn't you hear Francis and Lara fucking? Come on, I'm so horny."
"No, Richard, I don't want to. Please." Mariotta was quieter, trying to wriggle away from her husband.
"Please, come on, just a little. I really need this."
"Richard, please. I really don't feel like it."
"Then just suck me, just suck my cock. Come on, just open your mouth and I'll put it in, and you just lie there, I'll do all the work."
"No!"
"Then use your hand on me, please, just wank me, wank me off. It'll be quick. Come on, sweetheart, that's it. Oh God, do it like that, harder. Faster. Oh God, I'm so hard, listening to them. Stroke my balls, sweetheart, just a little, please. Oh God."
Lara turned to Francis and saw that his eyes were open and he too was listening to his older brother getting wanked off by his wife on the other side of the dividing wall.
"Christ! They must have heard us," Lara whispered. "I didn't realise these walls were so thin."
They could hear little creaks coming from the bed in the room next door.
"That's it, that's it, don't stop, keep pulling my cock like that. I'm going to shoot all over you. Oh Mariotta. Oh God." The noises reached a climax then stopped.
"Christ!" Francis said. "That was weird, listening to my brother getting off on his wife." He felt Lara's hand drift down his body and close around his cock.
"It's made you hard though," she said softly. "It was sexy, wasn't it, listening to them." She was stroking his cock. "Do you think Mariotta's always that reluctant?"
"We're here for the week in this hotel," he said grinning. "No doubt we'll find out for ourselves."
For the next three nights it was the same. They heard Richard pleading with his wife for sex, for anything: a hand-job, a blow-job. Twice she gave in, once she refused to even touch him.
"Do you think he's wanking in the bed beside her?" Lara asked. She was sucking Francis, taking his wonderful eight-inch cock deep into her throat.
"Or he's got up and gone into the bathroom," Francis said through gritted teeth. "Christ, Lara, I'm going to cum, swallow all my cum. Christ!" There was no doubt that listening to Francis's brother and his reluctant wife was turning them both on. The previous night Lara had pretended to be reluctant like Mariotta and Francis had had to persuade her, almost forcing her, and they had both got off like that.
On the fourth night, they heard Richard and Mariotta fucking.
"Oh God, Mariotta let me fuck you, please let me fuck you. Yeah, you're wet, let me get inside, oh yeah that's good. Is that good for you too? Did you like listening to Francis? Knowing that he's next door. Do you want to fuck my brother Mariotta? Imagine I'm Francis then, imagine this is his cock inside you. Oh Christ, I'm going to cum, I'm going to cum so hard."
"Barely two minutes," Lara whispered. "No wonder she's not enjoying it." And then, later, "Do you think she is thinking about you?"
Richard and Mariotta were both five years older than Francis. His sister-in-law was an Irish beauty, with black hair and green eyes, and a lush voluptuous body, very different from Lara, who was blonde and slender and perfect. He had had many women before her, but none since he had met her, and wanted no-one else. They were matched, in bed and out.
"Ask Richard," Lara pressed, and Francis could tell that this excited her. "Ask Richard if he wants you to go in and teach Mariotta about sex. I mean it. I want to listen to you."
"You mean it, Lara? You really want to lie here and listen to me fucking my sister-in-law next door?"
"God, yeah, it would be so exciting. And Richard would want to listen too. He could be here with me. Do it Francis."
The two Crawford brothers had never been shy about talking about sex: until they had married they had shared women more than once. Neither of them had ever had any trouble finding bed-partners even though they were very different: Richard was dark and big and sturdy, while Francis was blond and beautiful, with a perfect hard and muscled body.
Francis came to Lara that afternoon, his deep blue eyes alight with mischief.
"I talked to Richard," he said, "and he wants me to seduce Mariotta while he listens. We're going to do it tonight. He's going to start her off and then pretend to hear something and come out, and then I'm going in to finish it off. Are you sure about this Lara?"
"Yes." Her eyes were bright with excitement. "Is he coming to listen with me?"
"Yes." Francis watched her. Nothing had been said about what they would be doing. Christ, he was so hard just thinking about it!
That night Lara and Francis listened while Richard started touching his wife.
"Let me touch your breasts, Mariotta, you know you like that. Oh yeah, I love your nipples. Let me stroke them like that, yeah they're getting hard Mari, are you getting wet as well? I'm getting hard doing this to you." It was quiet for a little, just gentle creaks of the bed.
"Let me lick them and suck them Mari, can I?" They heard gentle sucking sounds. Then, "What's that?" Richard said. "Is it someone at the door?" Francis got up and went out, and then Lara heard voices and then steps walked back into her room. It was Richard.
"He's in," he said, and they settled down to listen.
"Tell me what it's like in there," Lara said, "so I can picture it."
"It's dark, Mari won't let me leave the light on. She's in bed with her nightdress on, with the top pulled down under her breasts." They heard the bed creak and knew that Francis was in bed with his sister, and she thought it was her husband coming back. It was quiet for a little, then they heard a faint moan.
"Christ!" Richard said. "He's getting to her."
