Even though I'm jealous when it comes to my long-term girlfriend, some of my fantasies revolve around imagining her with other, nameless guys. Sometimes I share these with her during sex and we both have a good time. But am I playing with fire?

Absolutely not! The ability to share fantasies with each other is a great asset to a sexual relationship. A fantasy around watching your girlfriend have sex is normal – and to able to watch she has to do it with someone else. If you tried turning the fantasies into reality, by going to a swingers club for instance, you might find it challenging. But there’s no need to go there. Keep up the stories, they’re erotic and fun. If you do want to experiment, a simple way to bring the fantasy into reality is put mirrors around the room. That way you get to watch her and have sex with her at the same time!