Bootylicious Jennifer Lopez and her coreographer ex-boyfriend Casper Smart reunited in L.A. Monday, but don't get your hopes up for a hookup just yet.

While the former couple was seen hanging out and driving around together in a white convertible, a number of naysayers say these two are hardly back together. They are, however, still good friends -- good enough that J Lo ducked to avoid photographers.

After being spotted by the paparazzi when they arrived back to Lopez's house, the 45-year-old hot mama, who was sitting in the passenger's seat, saw photographers ducked out of view in an attempt to hide her famous face. But as we all know, those paps are ruthless, and the photos of J Lo and Casper landed on the Internet anyway. 

But even with the pair spotted together, a number of reports say there's nothing to the duo's reunion -- yet. 

"They are still friends. They are not back together," according to sources for E! News. 

In the same report from E!, another source told the entertainment site that the pair are "great friends" and there is "nothing romantic going on between the two of them."

"Casper has an enormous amount of respect for Jennifer and her kids," the insider added to E!. "He still loves her and cares about the kids. Nothing has really chanced since they split regarding their relationship and nothing romantic is going on."

It's pretty unlikely that there's much more to the sighting. After all, Casper just purchased a new home in the Woodland Hills, far from J Lo's pad, and he's currently choreographing Nicki Minaj's performance for her hit "Bang Bang" at the MTV VMA's this Sunday.

And J Lo is hardly sitting around waiting for Casper, anyway. Rumor has it she's got a new man in her life -- Dancing with the Stars star Maksim Chmerkovskiy -- so we're pretty sure Casper is out of the picture. At least in terms of hookups, anyway.