Hi Marrisa,
Your phal is called a "Peloric". It can happen because the plant was bred for this to happen or a genetic mutation happened to make the two petals resemble the third petal or "Lip" of the blossom.
As for a name, it is almost impossible to identify it. A NOID it will probably always be but you can call it anything you like!
I'm sure others will jump in with more detailed information. I've just scratched the surface.
Some folks like these blossoms, others don't, it's just a personal thing. I happen to like them and your plant sure looks healthy and happy!
Al