Most people are not emotionally mature enough to survive an open marriage. They just aren't. Most are just too possessive, too insecure. They will always wonder,,,,,are they better, does he/she love them more, etc. One thing I do think........you have made up your mind that you need it, you can't stop thinking about it. Sexual wants are a powerful thing. If you aren't strong enough, it will suck you in like a vortex. Resist the kavorka. Resist the lure of the animal.