Admitting My Teenage Crushes Are Still Alive

I’m fifty and my crushes from high school are still alive. Yeah, I know it’s silly. But every time someone mentions those people, butterflies show up in my stomach like magic. It’s not romantic or anything, just that feeling you get when you think about the first time someone smiled at you or waved hello. Don’t laugh too hard, I admit it’s a bit childish. So, am I really still holding onto these feelings from decades ago? Or is this normal?