This happened about a week ago and I've thought about it every day since then. I had just turned twenty and mom and I were talking about her fairly recent divorce from my dad. Fortunately the divorce was a friendly one with both parties wanting out of the marriage. I asked mom if she sometimes misses dad and she said she did. I got a little personal and asked if she missed the sex. Mom took her time responding and she told me a shocker. She said, "I may as well tell you, I really don't miss the sex and I enjoy sex more with women." for a while I was literally speechless. I finally said, "I had no idea you enjoyed it with women." Mom told me she has always been bisexual ever since she was a teen. Now was my time to share with mom something I've hidden for the last few years. I told her that I too liked women and although I've only had sex with two men, I've had sexual experiences with about eight women. I shared with her that my first experience with a female was when I was thirteen. The other woman was eighteen. That was probably the best and most intense sexual experience I've had thus far.
That night when I went to bed I couldn't stop thinking about our conversation and I wound up masturbating to thoughts of maybe mom and I having an experience together. I will never raise the subject with her and I seriously doubt that mom entertains similar thoughts towards me. I think I should just try to put these thoughts out of my head before I cause problems for myself.