Crossing the Rubicon (2002)

Trevor Harrington is so brilliant, he has been identified as a new human species. Fortunately, he still has the twenty-three chromosomes necessary to breed with humans. In order to propagate this species, the Goodman Institute recruits a young girl, Ruby Crawford, to be his breeding partner. Just as Ruby falls for Trevor and they begin married life together, the media discovers the couple and threatens to endanger their existence by overexposure.