His hand on Kristen Stewart's derriere!
The couple were snapped acting adorable — ass grab and all — while watching Hot Chip at Coachella (above).
Seems like Robsten really are romantically entangled (literally) once more!
For now, at least.
And R-Patz wasn't the only vampire acting all sexy and sh*t; KStew was ALSO oozing sensuality with that torn-up, backless, bra exposing white tee…
Of course her loverman couldn't keep his hands off her!
Ch-ch-check out some snaps of Robsten wandering around Coachella (below)!
[Image via FAMOUS.]