Secret Fantasy Unveiled

I've been keeping a secret from my wife ever since we got married. There's this fantasy I have about being the obedient one in a relationship where rules are set and followed, no questions asked. It feels exciting to give up control once in a while, but I know it's not something she'd understand or accept. Still, every now and then, when I'm alone, I let myself explore that side of me. Is this normal? Should I talk about it with her? Would she even want to hear it?