Things are heating up between Jennifer Lopez and Alex Rodriguez! The Latin lovers are back in LA after a romantic vacay in the Bahamas where they first took their relationship public. Friday night, the couple hit up the Hotel Bel Air for a quiet dinner -- quiet until the paparazzi were tipped off that they were there!

As A-Rod's Rolls Royce pulled out of the prestigious hotel, the couple hid in the back seat -- their faces visible only for a second as the photographers' flashes shined through the windshield.

The pair spent time in Miami after their Caribbean getaway, J Lo even meeting Rodriguez's family and spending time with A-Rod's sister. Lopez and her man enjoyed a three-and-a-half hour dinner at Casa Tua in the south Florida city last week and the lovefest didn't end there! Now back in Los Angeles, the two are spending all their free time together here and last night was no exception. Maybe we'll spot them on a brunch date this morning??? Stay tuned ...