My Secret Fantasies With My Muse

I've been married for ten years now and everything has been wonderful with my spouse. We have a strong bond and a great sex life, but lately I've been feeling something new stirring inside me. It started when I began collaborating with this incredible model, my muse for some of my best art pieces. She's stunning, intelligent, and we share the same creative fire that keeps us going late into the night. We've become friends beyond just a professional relationship, but there's more to it than friendship. The way she looks at me when we're working on a project together fills me with a sense of excitement and desire I haven't felt in years. It's purely platonic, but my imagination runs wild with ideas about us exploring our mutual chemistry. There's nothing going on between us beyond an intense connection, yet the fantasies I have about her are becoming harder to suppress. I'm not sure how long I can keep it a secret from my wife.