Marriage Bed Blues

So here I am, a nonbinary person in my 20s, married for two years now. We've always had an open relationship and that's cool by me. But recently, things have gotten... complicated. My spouse has started expressing interest in more BDSM elements, which isn't something I'm completely unfamiliar with, but it's certainly new territory for us. Last night, they wanted to try out a roleplay scenario involving some non-consent elements, clearly labeled as roleplay only, of course. After a long discussion about boundaries and safety words, we agreed on the framework. It felt surreal, like stepping into a different kind of relationship. Now I'm left wondering if this is normal or just another phase in our exploration. Anyone have any advice for navigating these waters?