JC was struggling. Though towards what depended. The display was mesmerizing but for very different reasons depending on what thought he was having at the time. It was disgusting, barbaric, and horrifying one moment. The next it was a fascinating but wasteful display of vitae. And that was only the cognizant thoughts. The Beast wanted nothing less than to join in and gorge itself. Which brought up anger at the Prince for putting JC through this mental torture. Which just raised the beast even more, forcing him to try and control his emotions. All while he couldn't stop watching.
The distraction of Edward and Jennifer was both a godsend, an annoyance, and beneath the beast's care.
Flex, relax, flex, relax. Muscles and blood tensed and released. Controlled. Anticipatory.
Stay in control!