丢掉任性做你的女人收起幼稚做你的男人
[diū diào rèn xìng zuò nĭ de nǚ rén shōu qĭ yòu zhì zuò nĭ de nán rén]
'Put aside childishness and commit oneself wholeheartedly in relationship' implies growing up emotionally for the sake of the loved ones, promising to mature into a better partner.