父亲得知儿子与继妹有染，前夫知晓但没有告知，婚姻陷入困境。 Father learns of son's affair with step-sister, ex-husband aware but didn't inform, marriage struggles.

一位父亲发现他的儿子与他的继妹有染，后来发现前夫知道这件事但却没有告诉他的儿子。 A father discovered his son had an affair with his step-sister, and later found out the ex-husband was aware of the affair but did not inform his son. 父亲正在努力控制自己的情绪，发现很难给予支持和同情。 The father is struggling with his emotions and finding it difficult to be supportive and empathetic. 他想知道，如果告诉儿子他知道这件事，是否有助于他的婚姻。 He wonders if telling his son that he knew about the affair could have helped his marriage. 现在儿子和妻子正在离婚。 The son and his wife are now divorcing.