Just a Thought

I've been re-watching everything from the very beginning. When I got to "Over a Barrel" the thought that came to me was how similar Applejack and Braeburn appear to be. They have the same eye color, his cutie mark is a single apple version of her's, and their colors are perfectly reversed of each others. I know that they are cousins... but what if they were more? What if....

What if they were originally TWINS and were separated at birth??

Someone needs to write this story... I'm terrible at writing those kinds of stories.