DEAR DEIDRE: PLAYING around one bedtime, my boyfriend asked me if I’d consider an open relationship. But when I admitted my fantasy, he was appalled and is now sulky. We’ve been together for three years and have never been adventurous in bed, although I’ve secretly wanted to be.

So when he asked about non-monogamy, I was excited and hoped this would be an opportunity to start exploring our sexual relationship. I really fancy him but he has convinced himself my sexual dream must mean I’m gay. We are both in our early thirties and in his mind opening up our relationship meant we could go off and have sex with other people, with each other’s blessing.

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co.uk He was clearly taken aback when I revealed I’d like to watch him having sex with another woman. The thought of watching him undress and get intimate with a curvy, confident woman really turns me on.

In my fantasy it’s all about them — watching them move together — and afterwards my boyfriend and I have sex together alone while talking about his session with this other woman. But in his head, I’m introducing him to the idea that I only like women. He is convinced this is only the start.