The protagonist represents the ultimate tragic figure of this genre: one who is physically compromised but socially determined. The "mouth" becomes the gateway not just for speech, but for truth. By resolving to keep the mouth shut—even under torture—the protagonist prioritizes the illusion of the marriage over the reality of their actions. This reflects a deep-seated cultural anxiety regarding the exposure of private desire and the fragility of the public self.
If you're looking for a (advice or commentary), here's one in that spirit: juq103 i cant tell my wife even if my mouth i