一辈子仅一心一辈子不二情
[yī bèi zi jĭn yī xīn yī bèi zi bù èr qíng]
'Only One True Feeling For Life; Never Unfaithful Throughout Eternity' means loyalty in feelings towards someone or something during the entire span of one's existence. With dedication and faithfulness emphasized in this phrase, the person vows never to betray his original commitment over again regardless of circumstances encountered throughout lifetime.