I am in my 40s and have been married to DH for over 10 years. I would describe our sex life as being adequate. It isn't earth-shattering or amazing, but it's ok. Until quite recently, I had never had any thoughts about being with a woman. About 2 years ago I found that I was becoming curious about the possibility of it and began reading erotic fiction with that theme. I thought this may be a passing phase, but the feelings have actually become stronger over time. I have had fantasies about women while being intimate with DH. If anyone is wondering, I am not planning to run off and have an affair with a woman behind DH's back. If he gave me his blessing I think I would like to have a one-off experience though. Should I tell him? Has anyone discovered similar feelings later on in life and if so did you act on them at all?