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

JT: Panic attack, fear of commitment -- it's just guy stuff.
Vincent: No, no no; guys do not beast out when they're moving in with their girl.
JT: True, but that's how your primal brain shows fight or flight.

Tess: How much did you leave after I left?
JT: I was drowning my sorrows, generally being self-destructive.