They had a Child
There's not much I remember from my childhood. I had a very short one, after all. What I will always remember, though, is the toll it put on my mother to have to deal with both me and my father. We were heat-sucking monsters, draining the life from her. We could see it, and I could see how much my father was suffering just so I wouldn't have to. He would breathe fire into his hands, attempting to warm himself, but at times when he was too cold, he couldn't even do that. His ability was lost. He was going to die. I knew he was. I had to do something.
I was thirteen when I told my parents I was ready to be wed. They gave each other this horrified look. It wasn't because of my age. That was normal at the time. In fact, had I waited more than a couple years more it'd have looked suspicious. They knew this day would come, but they were scared. They were scared of the humans I would have no choice but to offer myself to. And they were right to be. After all, my attempt to court a human is the reason they were killed.