Is it normal that i fantasize about my dream wife having a hardcore lesbian affair?

Not just average lesbian sex but proper dirty stuff. I imagine myself happily married to a really hot girl (I'm single rn) and then some butch lesbian befriends us and slowly seduces her behind my back. Sex happens and she does progressively nastier stuff to my wife....banging her hard with a dildo, fisting her, then finally licking out her asshole and tongue-fucking her right up her bum. Yep basically an adultery fetish with a lesbo twist....anyone share this?