It sure looks like J.T. is trying to talks some sense into Vincent. Odds are pretty good the subject is Catherine!
Added:
Tough luck, J.T. Tess places the character under arrest in this scene.
Added:
Tess and JT are featured in this Beauty and the Beast scene. It's from the episode "Don't Die on Me."
Added:

Beauty and the Beast Quotes

Cat: So what happened? J.T. begged you to take his place?
Vincent: No, I begged him.

Alex makes you do reckless things that the rest of us have to protect us from.

Cat