Wife is getting in to SPH

My wife has known for many years that my biggest fantasy is to share and watch her. She has never shown any interest in that. However, for the past 6 months or so, every time we have sex she starts SPH talk. She gets turned on talking about my little cock eventhough im over 7" and thick. It kind of turns me on. I can always tell when she's about to cum because she's very vocal about my little cock. After she cums, nothing. This happens every time. My question is, after all these years, is it possible that she might change her mind about fucking other big cocks?