Why the name?

Ok, heres my post on the title. I called it fire and ice as its an idea i came up with at some point this weekend. It was something that was already going around in my head.
I was thinking about what if there was some sort of Prophecy. I've got some idea's going, so i'll put them in my next post. But the other night i thought about how Andrew and Jade could be like fire and ice. One would be fire and one would be the complete opposite as ice. so i came up with this thing Fire and Ice.