Jennifer Lawrence & Chris Martin – Date Night Cover-up … Thanks Bono!

Jennifer Lawrence and Chris Martin are still going strong, but if you want to get through to them, you’re going to have to get through Bono first.

The couple hitched a ride with U2's frontman after they went to the band's concert Sunday (Bloody Sunday) night in L.A. They all hopped in the same ride to the after-party at Chateau Marmont -- and Bono felt the need to play white knight ... shielding J-Mart from cameras.

Shhhh!! No one tell Bono he's a little late with the cover-up -- everyone already knows Chris and Jennifer are dating.