Once we had been doing sixty-nine with her on top and I pushed my finger halfway in, finger fucking her butt while I licked her slit. She had loved th...t and it had been very stimulating to me to watch it.Now I decided to go for broke. With her butt up in the doggie position I caressed her crack placing my finger on her anus after a few seconds. She has a very cute brown hole. I had noticed that the other night. I knew I would have fun playing with it. Before she could realize what I planned I. " What do you mean by that?" Watch your back!" Huh?" I asked, pulling my pants up. He was gone. I followed him to his bedroom door, which he slammed in my face."Charlie, you're going to have to tell me what you mean. I'm not clairvoyant," I said, looking at the door, considering opening it."I saw you," came from the other side of the door."You saw what?" I asked, as if I didn't know what he had seen."You know." He was right. I knew exactly what he had seen and I hated myself for taking part in. I froze and listened.The sound of slow, even breathing reached my ears and I was pretty sure I was safe, but I slowed my stroking hand so as not to cause too much noise. It felt so very naughty to be masturbating so close to my coworker. That made me even more turned on and I could feel an impending orgasm building in my groin. I reached over to grab a kleenex, knowing that there was no way I was going to stop what I was doing, in spite of her presence, and then leaned my head back and closed. Here lips were swelling up so I could tell she was getting excited also. Now we were all sitting on the edges, my cock was rock hard, his was semi-hard, and her nipples were hard.I asked if he would be ok with me fucking Jill in front of him. He hesitated for a minute and then agreed. I quickly moved over and stuck my face in her pussy. I licked across her lips and could taste her juices. All this talk had her very turned on. I moved up and began sucking on her nipples as I slipped my cock in.