I am curious, though, which Madam Gongsun was close enough to him to be let into the secret. Ouyang Qing? Wouldn't she have been upset at his relationship with Liu Qingqing? Of the seven Gongsun sisters, Daniang and Siniang were the closest to him, but Daniang was dead and it would be weird to write Siniang back into the story having written her out as LXF's love interest in Book 4 without killing her off. Erniang might feel gratitude to LXF for saving her life, but it's extremely unlikely LXF would trust her, an ex-villain, with such a vital secret even if she'd genuinely reformed. He didn't seem to be have any particular relationship with Sanniang, Wuniang, Liuniang and Qiniang, even if he was on friendly terms with most of them.