John keeps watching as the woman increases her pace

John's curiosity held him in a vice grip, urging him to steal glances at the mysterious older couple as he wrestled with his own thoughts. Each covert look only fueled his speculation, yet the distance and the bubbling water kept the truth hidden from him. He continued to watch, a mixture of fascination and disbelief warring within him.

As John stole yet another glance in the couple's direction, he noticed that Jane had started talking to him, her voice carrying over the gentle hum of the hot tub's jets. He quickly tore his gaze away, endeavouring to rejoin the conversation, but his attention remained divided. Jane seemed engrossed in her own words, seemingly unaware that he had momentarily drifted away.

Trying to focus on Jane's words, John nodded and offered occasional affirmations, all the while his mind yearning to steal another glimpse at the couple. Their murmured conversation slowly faded into the background, and John's eyes once again wandered back to the enigmatic duo.

This time, as his gaze settled on them, John's pulse quickened. His suspicions seemed to be confirmed, at least to some extent. The woman's movements beneath the water had indeed intensified, her shoulder now betraying a rhythm that was far from casual. His heart raced as he grappled with the audacity of the scene playing out before him. The notion that they were potentially engaging in such an intimate act in a public space was electrifying and surreal. John's mind reeled, torn between disbelief, voyeuristic excitement, and a lingering sense of taboo allure.