There’s no such thing as finding someone too early or too late. Everything happens at a time when it is supposed to happen. That’s the notion of fate. When it’s meant to be, etc.
But aside from your concerns over finding love too early in life (which isn’t really a valid concern), I find it somewhat troubling that despite the fact that you’re in a perfect relationship and you acknowledge that it is in fact love, you’re still curious about the alternatives out there.
Here’s something that I have learned in my many years of dating experience: that feeling you have…? The one where you feel like you need to experience more than just what you have? Well, here’s the bad news; that feeling never, ever goes away. It’s a human condition to always fantasize, to wonder, to daydream, to want. If you weren’t experiencing a gnawing curiosity about the world outside of our immediate bubble, then you wouldn’t be human.
But the hard part is finding satisfaction and contentment in the here and now. Even though you’re in your early twenties, you’re old enough and mature enough to understand that it takes a bigger person to commit to one love than to venture out into the world and seek out varied experiences. That’s what psychologists call, running away.