-Technically- you're wrong.
Laws belong to mathematical statements. Theories belong to the study of physics (among other things). It will never be a law. It explains a law (of gravity) and that's why it's a scientific theory :)
You can "prove" it as many times as you want. That's not what makes a scientific law. The explanation of the law, will always be a theory. It's just a different definition of theory than the non-science term.
Ex. Newton has laws, because they are formulaic, mathematic. They don't try to explain why something is happening, they give a mathematical definition of what is happening.
Laws belong to mathematical statements. Theories belong to the study of physics (among other things). It will never be a law. It explains a law (of gravity) and that's why it's a scientific theory :)