Gerard Pique, Shakira

Spanish soccer star Gerard Pique and Shakira at the Billboard Music Awards in Las Vegas in May. The couple, parents of an 18-month-old son, met at the 2010 World Cup. (Frazer Harrison / Getty Images / May 18, 2014)

Colombian pop star Shakira will be performing at her third World Cup when she takes part in Sunday's 18-minute closing ceremony at Rio de Janeiro's famed Maracana Stadium.

Four years ago at the South African tournament she was introduced to Spanish national team star Gerard Pique. The two struck up a romance and the couple had a son, Milan, 18 months ago.

"Soccer has changed my life in so many ways. And affected my life on so many different levels," she said Saturday. "In 2010 I met the love of my life. And if it wasn't for the World Cup my son Milan wouldn't be here today."

Having a boyfriend who has played in two World Cups -- winning the title in 2010 and being eliminated in group play this summer -- has also introduced Shakira to the pressures the players feel. So when she was asked for a prediction on Sunday's Germany-Argentina final, she refused to pick a winner, saying only that she was rooting against penalty kicks.

She also invoked the memory of Paul the Octopus, who correctly predicted many games in the 2010 World Cup from his tank in a German aquarium.

"I only pray to God that we don't go to penalty kicks," she said. "They're too cruel. Where's the octopus when we need him? We need an octopus."