OMG! I Blocked My CEO Husband

Since childhood, my family was poor, and my mother was diagnosed with a brain tumor that required 300,000 for surgery. However, all our savings were taken by my father. I happened to save an old man who had a sudden illness on the roadside. This old man turned out to be the former CEO of a big company! And he suggested that I marry his grandson, a billionaire CEO! To get money for my mother's treatment, I agreed. Unexpectedly, my husband turned out to be the man I saved ten years ago! But he thinks his savior was another girl. Should I tell him the truth?