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.

It's been kind of a thing for months now.