Despite rumors that the low-key couple had quietly split, Holly Madison and Benji Madden are actually heating up! In fact, In Touch has exclusively learned that the former Girls Next Door star and her Good Charlotte beau, who have been dating since December, are planning to shack up. “Benji cares very much for Holly. They have been talking about living together,” a source tells In Touch, adding that the current Peepshow performer will soon leave Las Vegas to be in LA with Benji. The loved-up pair was spotted kissing at an IT BOYS! music video shoot in Sun Valley, Calif., on March 3. “Benji kept telling her how amazing she looked. They couldn’t keep their eyes off each other,” the source says. Benji and twin brother Joel, who discovered the band, had asked blond bombshell Holly to make a cameo appearance in the video.