Hi<br/><br/>Could you please tell me which of the following sentences you find natural?<br/><br/><b>Only then did I realize that he had been lying to me all the while.</b><br/><br/><b>Only then I realized that he had been lying to me all the while.</b><br/><br/><b>Then only did I realize that he had been lying to me all the while.</b><br/><br/><b>Only then I realized I realize that he had been lying to me all the while.</b><br/><br/>Thanks a lot,<br/><br/>Tom