It was not as dark as I had first thought, outside the tent was a faint pale light, and it bathed the tent fabric, against that soft backdrop of light I saw the clear silhouette of Francis kneeling up, just inches from me. Her hair was a spray of pale gossamer, and every line of her face was etched in clear relief, the swell of her breasts and erect nipples as clear as if carved from alabaster.
Then dark shadows closed over her breasts, and she let out a soft hiss of pleasure. "Go on!" Peter urged her. "Please!"
One of her legs touched my arm, which was lying out of the bag, I felt her naked thigh against my bared arm, I realised she had cast back the sleeping bag and was kneeling over Peter, her leg nudged me again as she positioned herself, I did not move my arm, afraid she would realise I was awake and spying on her. The touch of her flesh to mine was an impossible thrill.
Francis paused her shuffling and lifted her head to look up to heaven, her hair cascaded down her back and she let out a fierce hiss, closely followed by a heart-felt groan from Peter. I felt the muscles in her thigh working as she flexed and relaxed them and as she did, her body lifted slightly and fell back in a slow, exotic rhythm. I struggled to keep my breathing even and slow, I heard the slap of skin on skin as they struck at each other, Peter gripping, then slapping at her swaying breasts, she punching her hands down against his chest.
Her movements became less smooth and faster, she panted and let out small yelps. Of its own volition my arm lifted and rested over her straining thigh, one of her hands closed over mine, pressing it down to her, a rope of muscled pulsed against my palm. I bit my lip to stop from moaning as her passion crossed our touch. I dug my nails into her, and she gasped "Not yet!" Mortified I relaxed my hand, but she pressed it hard back down and her fingers closed over mine, forcing my nails back into her skin.