If you're still active on here, happy scorpio, I'm curious if you've made progress over the last two years? I am not sure there is an easy or correct answer to your question... I have found it to be very difficult to find a woman interested in joining a couple... it puts that woman in a very vulnerable position because the dynamic is 2:1, not 1:1. I've also found it's difficult for me to put myself out there when I do find a woman attractive because I don't want to be rejected. My husband and I have a wonderful marriage and amazing sex life, but he's unable to satisfy the part of me that longs for a woman, so I keep trying/looking. I digress. I say put yourself out there... have fun and don't deny the part of you that desires a woman. When you find her, sparks will fly and you'll never look back! :-)
I am a woman in my forties and only recently also realized how much I like being with women. You may want to hire a working girl to break you in and maybe give you some pointers...LOL. I think you should go with what you feel and enjoy yourself.