We went to the movies together and whilst sitting there in the dark I put my arm around her shoulders and let my hand drop down onto her boob. It was...'t pushed away so I started to stroke over the nipple which soon went hard. No matter what manoeuvre I tried that was as far as I got. Whilst waiting for her bus to her home, as it was dark I pushed my crutch against her's. She must have felt my stiffy and didn't push away but I was still only allowed to stroke her breasts outside her clothes. . There was no direct blood relationship involved in their improvised couplings so there was no sense of incest in their passionate nocturnal fumbling in the darkened bedrooms. Sometimes, their decisions about switching partners were made in lust-driven experiments with the sounds of panting and groaning filling the large house with an atmosphere of frenzied sex. The spirit of excitement was heightened under the light of the voyeuristic moon after all the lamps were turned off for the final time. Mark stomped once as hard as he could and ran into the motor home. Melissa sat on the side of the bed with a dazed expression on her face."Mark, what happened? I couldn't reach you or Teacher. What's wrong?"Angela called from the front entrance, "Hank is struggling with two others."That snapped Melissa out of her stupor. She jumped up, ran past Mark and her mother and jumped out the door. Mark stepped outside just in time to see her leap into the air and do a double kick while in mid flight.. .. the fact she was even willing to do that much was a surprise. She's about as straight as anyone you'd ever want to meet. So even touching another woman would have been out of the question for her. The fact she even did what she did was amazing enough."It was then that I saw Michelle had allowed her hand to drop down between her legs. She wasn't exactly being obvious about it, but even from where I sat, I could see she was still rubbing herself through the material of her bright red "goldies".