Ah, creative and manipulative women who know exactly what they're doing when they put a guy into chastity. I really like how you have them expressing their enjoyment of the games they play.
The girl's pleasure at how unfair she is making things is key to chastity. After all, she's taking away a man's pleasure ... that's much more significant than silly things like enforcing fidelity.
The key word here is 'unfair'. I really like captions where the woman comments on how unreasonable she's being.