Following J. Lo’s ‘Dance Again’ video with boyfriend Casper Smart, MTV News looks back at the singer’s habit of enlisting real-life loves for videos. By John Mitchell Jennifer Lopez and Casper Smart in the “Dance Again” music video Photo: Island If Jennifer Lopez ‘s stylish video for “Dance Again” proves anything, it’s that the diva must not be a fan of photo albums. We know what you’re thinking: How did he get that out of J.Lo’s glittery new clip? Well, it’s the only explanation for why she has time and time again recruited her current boyfriend for a video. It’s a trend that dates back 16 years, to her appearance in Diddy’s “Been Around the World.” In the years since, ex-husband Chris Judd, former-fianc
