They Fell in Love
The dragon had decided to name himself Dracon, as to feel connected to who he was in his soul, but that is not the only thing he connected with. You see, my mother and he spent a lot of time together, she taught him about the intricacies of human society, and they got to know each other very well. They would spend time out in the sun, gathering berries and hunting game, laughing the day away.
One day in particular, while they were enjoying a walk they had stumbled upon a green moonstone. My mother had swiped the dirt off of it, before she smiled at him. It was the same color as his eyes and so, then, they proceeded to dig it from the ground with their fingers. It was a really large stone, larger than either of them had ever seen before, and when their hands met as they took it out, they looked at each other for a long moment before proceeding to kiss. It's because of that stone that they became one, that I was born, and why you exist.