It was horny as fuck to see, but then I did the unthinkable.I grabbed her hand holding his cock, and forced it quickly down and forward, inserting his...helmet and few inches of cock into her wide open pussy, the labia lips encircling the invading cock. I had stuck another man's cock into my ex-wife's pussy. She let go and gasped at me. He looked at me somewhat confused, and grunted "Yeah?" I nodded hard and he thrust his cock all the way in and grunted as he finished his orgasm. I stared. “She’s beautiful, isn’t she?” I smiled at James as I sat on the bed.“Yes, she is,” James replied, Gary, thank you.”“What for?” I asked, “For letting you sleep with her? There’s no need to thank me bud.”James smiled a more relaxed smile.“I told you last night that I don’t mind sharing her with you,” I said in a more convincing tone, “She can sleep with you whenever she wants to buddy.”“Thanks.”“From what she told me about yesterday, she really enjoyed making love with you,” I smiled, “And, I’m. “It’s not me,” I replied. “It’s us. We have something special. Some sort of connection. Like positively and negatively charged particles coming together.” She looked at me quizzically. “It’s explosive,” I said.She grinned. “You swallow a science book or something?”“No,” I said with a laugh. “I was flicking through the channels last night after you left and came across this documentary on that big particle collider in Switzerland. It was really interesting. I didn’t understand it all, but it was. Her hand went down her knickers and quickly found her clitoris, her pussy was moist to start off with but when she had starting touching herself her pussy juices just started flowing. Her fingers moved from her clitoris to her pussy and they easily entered, two fingers then three probing her pussy searching for her g-spot, all the time thinking of Jill. She finger fucked herself until she realised that her brother would be home soon, if he wasn't home yet. What would he say if he caught his.