I was sent home from work early and ended up having sex with my sister-in-law and her pal

DEAR DEIDRE: WHEN a fire at work meant I was sent home early, I ended the day having sex with my sister-in-law and her friend. It was a hot night.

I’m 42 and don’t often work nights. My wife is 38 and a nurse. Now and then our shifts clash and that is when my sister-in-law will step in to help out with the kids.

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She’s 44 and she’s hasn’t got children of her own. Her husband is a big earner so she is a lady of leisure.

That’s very lucky for us, as she lives around the corner and is always happy to lend us a hand when we’re up against it. We have three lively children — two sons and a daughter — who all love their aunt.

I got home at 10pm that Saturday. My wife was at work and my sister-in-law was in charge, with a pal keeping her company. Her friend is a real livewire, about the same age, and has been round our house quite a few times.

I told them I could take over but they had opened a bottle of wine and looked settled in for the night.

The children were all up in bed, so I decided to have a drink too. I went to the kitchen to get some cold beers.

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When I was back in the lounge, the two women were giggly and getting quite flirty with me. I told them how grateful I was for their help. As daft as it sounds, we all had a group hug.

I was there on the sofa with two sexy women, one on each side.

It got very friendly and steamy and we then had a threesome right there in the lounge. It was mindblowing.

I hadn’t realised my sister-in-law was in a relationship with her friend. She got in touch the next day saying they’d had a great time and suggested we do it again. We have — several times.

My wife is not suspicious but I feel guilty and want to end this outrageous affair.

The friend suggested a threesome with me and my wife, which is a real turn-on to think about but not practical. How do I sort all this out?

DEIDRE SAYS: I am glad you realise that suggesting a threesome with your wife and her sister’s friend and lover would be beyond risky.

I feel very sorry for your wife that her husband and her own sister should betray her this way.

Don’t fool yourself that it is just harmless fun. If your wife finds out, as she certainly will if you carry on, please don’t pretend to yourself this is something she would ever forgive.

Her sister must be very bored in her life if she is willing to play this kind of Russian roulette with the lives of her sister, her nephews and niece.

Tell her you are grateful for all the kind help she has given in minding your children but that you have realised you crossed the line in terms of what is acceptable behaviour.

Avoid working nights if you can or find a new babysitter.

It is not easy, I know, but carve out some time for your wife and yourself to have fun.

My e-leaflet Your Relationship MoT can help.

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