Tina and I talked a lot in the weeks after our first foursome with Andrew and Sally. We agreed that the stability of long-term playmates was preferable to constantly seeking new single men, but we would have to find ways to keep the sex fresh and exciting. Needless to say, Tina was also talking to Sally on the phone in the evenings, and I realised that they were hatching plans.

Getting together as a foursome needed careful planning, but there were more frequent occasions when Andrew and I could entertain their children on a Saturday, leaving Tina and Sally to enjoy some fun together, usually at our place. I had never thought of my wife as being bi, but that side of her sexuality had grown over a very short time. I had certainly enjoyed exploring Sally's slim body when we all played together, so perhaps I should not be surprised that Tina might be attracted to her too.

Tina said that Sally had started talking about making a video of them together, so Andrew and I could feel part of it. So I set up my camera on a tripod in our bedroom, and showed my wife how to set it going when they were ready. That evening, Tina and I watched the video on our TV downstairs. It wasn't very professional, filming from a single fixed camera, but it was good enough to get us both going and we fucked like rabbits on the lounge floor. I emailed the video to Andrew, and I gather they ended up doing the same.

By the time we were able to arrange another foursome, we were all looking forward to each other's company. Andrew and Sally had arranged for their children to spend the weekend with Sally's parents, so we could have a nice meal out together, followed by coming back to our place for 'dessert'. Tina asked if we would like to watch the video together when we got back to our house, or whether we would prefer a live show. Not surprisingly, Andrew and I opted for the latter.

Watching Tina and Sally doing an impromptu dance in the living room, slowly stripping each other down to their underwear was a big turn-on for Andrew and I, and we were both stroking our cocks over our trousers. By the time the ladies got down to their hold-ups, they were ready to go upstairs to our king sized bed, which allowed us so much more room than the first time we played with them. Initially, we had to stand and watch our wives enjoying each other, but we were invited to join them after they had 69'ed, bringing each other to a noisy orgasm.

For me, the most erotic moment was when I was lying on my back, with Sally knelt between my legs sucking my cock. Alongside us facing the other way way were Tina and Andrew fucking missionary. I could have easily reached out to touch my wife's pussy and would happily have licked her clit if it had been physically possible. Tina was panting and groaning, clearly starting another orgasm, when Sally switched her attention from my cock to reach over and start kissing my wife, mauling her ample tits as their lips and tongues entwined.

Having assisted in my wife's noisy orgasm, Sally switched her attention back to me, climbing astride me to lower herself onto my rampant cock.. Normally, I like to perform oral on my wife immediately before we fuck to ensure she is properly lubricated, but I think Sally knew how wet she was, and I could slide in effortlessly.

Sally slid up and down on me gently, as I enjoyed the sight of her engorged nipples above me. Andrew had finished inseminating my wife, his shrinking cock slipping out of her sopping pussy, and she sat up to kiss Sally, I think to thank her for Sally's part in my wife's orgasm. My view of them becoming passionate was obscured however, when Tina cocked her leg over my head and lowered her sloppy pussy gently onto my face.

As I could no longer reach Sally's delicate tits, I reached up to grasp my wife's ample pair, mauling them as I know she always enjoys, whilst plunging my tongue into her pussy. She tasted wonderful!

It wasn't too long before I exploded inside Sally, as she continued to snog with Tina, as though I wasn't there. When Sally rolled off me onto her back, my wife simply dismounted from me, so she could 69 with Sally to lick her clean.

Andrew and Sally stayed the night at our place, although I doubt whether any of us got a good night's sleep, with one or other of us reaching out for a 'fumble' at some stage during the night.

Over breakfast the following morning, Tina and Sally started talking about wanting to be watched while we have sex. I suppose I should have realised that my wife had exhibitionist tendencies.