Conflicted About a Kink

I've been with my partner, Alex, for about two years now. We have a pretty open relationship and I know she trusts me to be honest about what I like in bed. But lately, I've had this odd attraction to the idea of being... let's say, treated in a way that feels less like an equal partner and more like a plaything or toy. It sounds weird when I type it out, but there are moments during our intimate time together where I imagine scenarios that aren't exactly aligned with her vibe. I know Alex is into some fun role-play stuff too, but this particular thing doesn't seem to be one of them. Sometimes I feel guilty for these thoughts and wonder if they're just a phase or something more serious. Should I bring it up in an open discussion about our sex life? Or would it just end up making things awkward? I'm not sure how to approach this, especially since the idea feels so foreign yet also oddly exciting at the same time. What do other people with similar kinks think, do you ever talk openly about them or keep them more private?