Mickey Rourke Johnny Depp's a Low-Key Gentleman

5/28/2016 10:45 AM PDT

Mickey Rourke -- Johnny Depp's a Low-Key Gentleman (VIDEO)

EXCLUSIVE

Mickey Rourke has Johnny Depp's back ... that much is clear.

We caught Mickey leaving Caffe Roma in Bev Hills Friday and we asked him about Johnny's very serious domestic violence case brought on by Amber Heard. Check out the vid ... Mickey's almost surprised that he's asked about Johnny's temperament.