A simple DNA test is all it takes. Just a quick mouth swab and soon you'll be matched with your perfect partner--the one you're genetically made for.That's the promise made by Match Your DNA. A decade ago, the company announced that they had found the gene that pairs each of us with our soul mate. Since then, millions of people around the world have been matched. But the discovery has its downsides: test results have led to the breakup of countless...