The End of an Era...?

So I've been playing the Daddy role for about five years now. Yeah, we hit that milestone pretty much at the same time my partner turned eighteen, just enough time to make sure she knew what she wanted and that everything was super-consensual. But here's a thing: we're both adults. We chose this path together...or so I thought. We've had some great times. Lots of fun, some not-so-fun but still consensual discipline stuff (you know how it goes). She always seemed to like my take-charge attitude and the roleplay aspect of things. But recently? Things have been...off. It's hard to explain without sounding like a total whiny baby, so let me just say I feel kind of unappreciated. I've tried bringing it up in conversation, no soap operas here, folks, just some honest talk about how I'm feeling and if there are things we need to address. But instead of talking, she's been...distant? Ignoring my calls, texts, not really interested in spending time together anymore. And that's when I found out last week: she started seeing someone else. Not just casually, I mean like the new partner, new life phase type. So I'm sitting here thinking, well wasn't this whole Daddy thing all a big play? And now it's over...or is there something more to salvage? I guess my question is: am I an asshole for feeling disappointed and unappreciated in what we had? Or should I be happy that she found someone who might make her happier than me ever did? She was always the one making the decisions here, but now it feels like everything is falling apart. Sorry if this sounds all dramatic...it's just a lot to process. Anyone got any thoughts on how I'm feeling right now? Or am I just being too damn sensitive about the whole thing...?