My Secret Kink Brought Us Closer But I'm Still Nervous

I’ve been with my girlfriend for two years now and we have a pretty solid relationship. We’ve tried a lot of new things together, but one night I suggested something that made me feel vulnerable: I wanted to role-play as her captive. To my surprise, she agreed. It was intense and exciting, and afterward, we talked about how it brought us closer. But the idea still lingers, what if someone finds out? What if I seem too needy or weird? I know what we did is consensual and private, but this kink feels like a double-edged sword. I’m proud of my openness with her yet can’t shake off this lingering fear.