In fall 545, due to an alliance between Western Wei and Rouran to attack Eastern Wei, Gao Huan sued for peace with Rouran by requesting a marriage between a daughter of Rouran's Chiliantoubingdoufa Khan Yujiulü Anagui and Gao Cheng. Yujiulü Anagui refused, stating that it would only be sufficient if Gao Huan himself married her. Gao Huan himself initially refused, but Princess Lou, Gao Cheng, and the general Wei Jing all persuaded him otherwise, and he married Yujiulü Anagui's daughter, referring to her as the Princess Ruru (蠕蠕公主). To facilitate this marriage, Princess Lou moved out of the mansion (and in gratitude, Gao Huan himself knelt down to Princess Lou to thank her), but Gao Huan and Princess Lou were not formally divorced, although, at Princess Lou's own request (arguing that the Princess Ruru would realize what was happening), Gao Huan did not visit her.