Not that Jennifer Lopez and Casper Smart have been fooling anyone — but they’re officially a couple again … and TMZ is basing that on the fact they’re finally kissing in public again. They’ve been sprinkling clues for months — slipping out of a GQ event together, partying at Big Sean’s House of Blues gig … and his dogs were at her house (which didn’t end well). They broke up last April after 2 1/2 years, but what if it was all for show?