NCIS: Los Angeles- 4x12 — “Paper Soldiers”

From link.

If ever u wanted to believe that actors get along off screen the same way they do on it, Daniela Ruah and Eric Christian Olsen are your dream come true. “We Tweet a lot back and forth,” Ruah says. “Our banter in real life is similar to what’s on the screen, because we have that chemistry together.” To prove it, she pulls up a pic of the dag Olsen playfully put up traffic cones between their chairs on set.

Right now, Ruah says, this sibling-like teasing “is our real relationship. But it will be a lot meer interesting for viewers if it does become romantic on the show....