While there's been plenty of speculation recently that Jennifer Lopez has gotten back together with toyboy backup dancer Casper Smart, nothing has been confirmed -- until now!. Our photogs snapped the former duo as they jetted out of LAX together, all but cementing that they're back together!

For her trip, Jennifer went incognito in a grey sweater, grey sweats and white Versace sneakers. Fierce no matter what! Her dancing boy went for an all-black ensemble.

Over the weekend, J.Lo and Casper shook their booties at Big Sean's Roc Nation shindig at the House of Blues, which sent the rumor mill into a tizzy. A fan filmed a vid of J. Lo and Smart getting down at the bash as Kanye West rapped "Gold Digger." And the May/December couple looked like they were having a blast together!

The exes were also spotted on a date last Thursday night -- but managed to avoid photogs. Fortunately for us, we got 'em this time!

We hope they have fun on their romantic vacay!