Trying to Understand My New Kink

I’m 36 and just started exploring DDLG with a partner who’s also in her thirties. We met online, and it was clear from the start she had this dynamic in mind for us. It took me a while to warm up to the idea, but something clicked recently during one of our sessions. I feel like there are so many layers to why I’m into this now, yet at the same time, I struggle to articulate exactly what it is that’s pulling me in. We’ve been meeting for about six months now, and we started off slow. A lot of phone calls and messaging before anything serious happened. When we finally got together, she led the way with gentle guidance, nothing harsh or scary at all. It was mostly like being a kid again but with more mature elements thrown in. Recently, there’s been this shift where I feel...different. It’s hard to explain. There’s an intensity now that wasn’t there before. Like when we’re playing, everything becomes sharper and clearer. It feels good, but it also makes me question myself sometimes. What if I’m crossing some kind of line? Or is this just a natural progression of what we started? I guess my main worry is whether this means I’m becoming something I don’t want to be. There’s always that fear that you might end up acting in ways that feel unhealthy or forced, even though everyone involved agreed from the beginning. So, I’m looking for some advice here. Am I being an asshole by questioning everything so much? Or is this just part of growing into these new experiences and boundaries we’re setting? How do others handle such big shifts within their dynamics? Your thoughts would mean a lot to me as I try to understand all this.