Mario Lopez says he and his wife, Courtney, "never stopped dating."Vivien Killilea/Getty Images for Calamigos RanchMario Lopez says he and his wife, Courtney, still do this one thing to help keep the spark alive."We never stopped dating — that's important," Lopez said.The couple has been married since 2012 and shares three kids.Mario Lopez, 52, says he and his wife still make time for one thing that keeps them close.Speaking to People at an even…