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."
