My Hidden Secret Kink

I've been married to Sarah for over two decades now, but there's this one secret I've been keeping from her for years. It started as just a fantasy that I indulged in alone, but lately, it's grown into something more tangible and real. Every night before bed, when we're both intimate, I close my eyes and picture someone else, someone younger with fiery red hair and piercing blue eyes. The thought of straddling them, feeling their bare skin against mine as they kiss me deeply, gets my heart racing and my pulse pounding in ways Sarah can't replicate anymore. Tonight, when we were making love, I couldn't shake the image. My mind was so vividly elsewhere that it felt like an out-of-body experience, Sarah moaning beneath me but not actually being there at all. The fantasies are getting more intense and detailed; every touch and sound triggers a cascade of arousal for someone who isn't even in the room. I want to be honest with Sarah, I truly do, but part of me fears losing her if she finds out about this kink. It's hard to reconcile my love for her with these fantasies, but they're as real and compelling to me as our physical relationship has become. Tonight, when we were climaxing together, I couldn't help but picture them underneath me instead, their body writhing and the sheets tangled around us as we came together in perfect rhythm.