Exploring Boundaries with CNC Roleplay

I've been in a monogamous relationship for three years now, and my partner is incredibly supportive of me exploring different aspects of my sexuality. However, there's one kink that I've struggled to talk about: consensual non-consent (CNC) roleplay. About six months ago, after reading extensively online and thinking it through carefully, I decided to try this out with a friend who understood and agreed to the boundaries we set beforehand. It was intense, both emotionally and physically. We used safe words and ensured that everything felt real but controlled. The physical sensations were heightened because of the power dynamic, my body responded in ways I never expected. But here's where it gets complicated: even though everything was consensual and clear from the start, there are moments afterward when I question whether what we did is ethical or if it will come back to haunt us psychologically. I'm grappling with these thoughts because I want to try CNC again, but my current partner isn't interested in this particular kink. It feels like a part of me is being split between what I know as safe and consensual and wanting to explore further into this taboo area for personal pleasure and understanding.