First of all, you have my heartfelt sympathies. Fantasies are (mostly) harmless, and yours is normal. I have the same problem - I'm psycho-hyper-sexual, and my husband is frigid. It's frustrating, to say the least, but what happens in my head stays in my head, even though he gave me the go-ahead to find a "buddy with benefits." As fun as that sounds, I know that the reality is someone, somewhere along the line, is bound to get hurt. I don't want a "buddy," I want a faceless person that I'm guaranteed to never have to see again or run into accidentally run into. My "relationship" with anyone with other than my husband would have to be be "use once and destroy," and that's just not feasible.