Welcome !! I am a 52 year old female and I consider myself bisexual too. I was in a 12 year monogamous lesbian relationship and I've been in 4 hetro relationships with guys which all lasted an average of 2 to 3 years each. I've only "come out" to myself as poly recently (within the last 3 months) and realize that I've been working my way to this lifestyle for many many years.....I also read The Ethical Slut and I resonated with it very much as well. I found this forum and have really been enjoying the sharing. It's helping me to wrap my brain around this!!