Caught My Partner Watching NC-17

So here's the thing, I'm in my mid-50s and have been happily married to Jane for 30 years. We've tried all sorts of things over the years, but lately I’ve found myself drawn to this whole CNC roleplay thing. It’s wild, I know, but it's also something that’s never been a problem between us. I tell Jane exactly what I want and she knows how to push my buttons in just the right way, she's amazing at keeping it all consensual and playful. Last night though? Well, here comes the embarrassing part. So we were in bed watching some boring old romantic comedy when I noticed her phone buzzing non-stop. At first, I didn't think much of it until I saw her browsing some adult content that I was pretty sure she hadn’t shared with me before. When I asked about it later, turns out there was a website featuring CNC scenarios. Jane explained it all, she said this stuff is really hot to watch but not something we'd ever actually do together. And that’s fair enough, I’m totally fine with whatever gets her going as long as she's not wanting me to join in or change anything I enjoy. But seeing her on these sites made me wonder: should I tell her about my own CNC fantasies? Would that just be weird? So here I am, asking, what would you do? Is it normal for couples to have such different tastes when it comes to adult content? Or is this something she needs to know from me?