NEW YORK — With three box office hits earning $1.17 billion at the US box office over the past three years, Kristen Stewart and Robert Pattinson are Hollywood's highest-grossing romantic film couple. The stars of the “Twilight” vampire films easily surpassed all other film twosomes in the Forbes list that looked at the top 10 grossing romantic films of the last three years. In explaining their method of calculation, Forbes said they “looked at the top-grossing romantic movies as classified by Box Office Mojo over the past three years and added up each couple's total US box office.” — Reuters