Confession from a Doctor with a Unique Kink

I've been married to Sarah for ten years now. She's my rock, but I have this one thing that she just can't get into. It’s like having a secret part of me that no one else knows about. Today we decided to push our limits and try something new. We set up the bedroom exactly how I wanted it with blindfolds and soft restraints. The atmosphere was tense but electrified. When Sarah agreed to let me take control, my heart raced. She trusted me completely. We started kissing deeply, her body so warm against mine. Soon, I guided her onto all fours and slowly entered her from behind, feeling the tight grip of her inner walls. It felt like heaven for a moment. But what I wanted was something more intense. I had to ask her if she could pretend to fight back slightly while I restrained her hands. She understood and we moved into that dynamic. The roleplay heightened my arousal, knowing there was this controlled struggle beneath me, it made every thrust deeper and harder. Her moans were muffled but clear under the blindfold, pushing us both closer to the edge. We climaxed together in a way that felt dangerously thrilling yet safe. This side of me is rare, even with her. I need someone who understands this level of trust.