Last night I bound and gagged my wife and fucked her twice.

Nothing too surprising there.

When I finished the second time and brought her off I left her restrained and called up a phone sex line.

I put the call on speaker and ran through a scenario with the operator where she was in fact my wife and she's decided to surprise me with a threesome for my birthday but at the last minute, just before I came home in fact, the friend she'd brought over for the purpose got cold feet and didn't want to go through with it.

They fought and the 'other woman' wound up over powered and tied and gagged on the living room floor just as I got home.

My 'wife' then decided to present the other woman to me as originally intended, telling me she'd tied her up ready for me knowing how much I like bondage. She also tells me that knowing I like it rough the other woman would play along and pretend to be unwilling; but don't worry she's up for it.

The scenario culminates with the phone sex operator urging me on as I anally rape the helplessly bound woman from behind while she struggles, strains and cries out through her gag.

Of course in reality I'm ploughing into my wife's already prepared arse and the cries and straining are all part of what turns us on.

The thing is we do this regularly (with different scenarios) and the phone sex operator keeps saying she really gets off on doing it with us. Yeah of course she does. Except that whenever I call up no matter who answeres the phone, once I give my details I get the same girl. She always likes to taunt my wife prior to starting the scenario too and encourages her to gagtalk.

She knows us very well by now and it's hot as hell talking to her as she knows just what we need to get us both off and she's very convincing in her own climax.

The thing is that last two times I called I wasn't charged for the call and when I brought it up this time our friendly operator confessed she hadn't been logging the calls but had been doing them herself 'off the clock'.

She said she couldn't keep doing this at work because she was worried she'd get found out and instead offered me her personal number and gave me time to call when she'd be off duty.

Of course I was suspicious and asked if she was trying to get involved with us in person but she said she didn't want us to meet but that she would like to keep the calls going as often as we liked when she was at home.

My wife is well and truly up for it and thinks it's even hotter doing it with someone who's not getting paid and is really getting off with us.

I'm inclined to give it a go.