The Sex Tape star, 41, and the Good Charlotte rocker, 35, visited Diaz's family over Independence Day. "They flew into Orlando and then drove to Tampa where they met up for a reunion," a source tells E! News. "They also spent a few days at the beach on Anna Maria Island, where Cameron's family has a house. It was a great vacation and they had a blast spending time with Cameron's nieces and nephews."
The couple's five-day trip marks the first known time that Diaz has introduced her boyfriend to her family. "Cameron and Benji are like big kids themselves. They were having a great time jumping over waves and splashing in the water. They were giving the kids piggyback rides and seemed like the best babysitters ever," the source says. Needless to say, Diaz's family loved Madden. "The kids all couldn't wait to hang out with Cameron," the source continues, "and Benji was right there with her having fun."