潘善仁(羅子溢飾)被爆出出軌醜聞後,形象大跌,在大專的教書資格亦岌岌可危,對本就因離婚官司而背上債務的他可謂雪上加霜。作為「死黨」的甘誠鈞(黎諾懿飾)好心收留善仁在自家的補習中心任教,並勸說其出售《婚後事》版權幫補,卻反遭善仁質疑,善仁更自爆一早知對方對自己老婆張明芯(陳自瑤飾)有意,兩人大打出手⋯⋯
延伸閱讀: 婚後事劇情20集劇透懶人包!劇情峰迴路轉 陳自瑤羅子溢王敏奕主演
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誠鈞對呂靜林(賴慰玲飾)心中有愧,慾加倍補償,又是送豪宅,又是計劃一起赴日本定居,還陪靜林回家吃飯,百依百順,但卻因靜林一個小舉動,誠鈞才恍然大悟,回想起靜林在自己身邊這麼多年,原來是忍受比享受更多,原來這位枕邊人並不快樂,而不快樂的源頭竟是自己⋯⋯冷靜的談話後,兩人落淚相擁,決定放生彼此。
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分手後的誠鈞再與善仁談心,期間火藥味十足,善仁諷刺誠鈞乘人之危,誠鈞揶揄善仁自命清高,更喊話要追求明芯,難道兄弟二人關係就此決裂?
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