Although I'd only had one lover before I met my husband, I had always thought that the sex in our marriage was fine.

Over the years we tried all the usual sexual positions, and a few I hadn't heard about before. We got to know each others bodies intimately, and our lovemaking almost always finished with both of us coming simultaneously. I knew I never wanted another man in my bed, but after twelve years of comfortable normal lovemaking, I realised that I wasn't horny very often. Realising this just made matters worse. Slowly, I started avoiding sex. It wasn't that I didn't want him, I just felt I was failing to excite him; so the damper that put on our sex life became almost unbearable at times.