How far would you go to find 'the one'? One simple mouth swab is all it takes. One tiny DNA test to find your perfect partner - the one you're genetically made for. A decade after scientists discover everyone has a gene they share with just one person, millions have taken the test, desperate to find true love. Now, five more people take the test. But even soul mates have secrets. And some are more shocking - and deadlier - than others
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