A forgotten love letter stayed hidden for 40 years. When it finally surfaced, two old sweethearts reunited. But the letter revealed why they had been separated.

I wrote a letter to my high school sweetheart 40 years ago. I never sent it. I put it in a book and forgot about it. Last month, I donated that book to a library sale. A man called and asked, “Is this Margaret Collins? I found a letter addressed to David.” My heart stopped. “I’m David Andrews.” He read the letter back to me. It said, “David, I’m pregnant. I need you. Please come back.” I was 19. He had moved away. I raised our daughter alone. She’s 39 now. He was silent. Then he asked, “What happened to the baby?” I said, “She’s a doctor in Boston. She has your eyes.” He started crying. “I’ve searched for you for 10 years. Your mother told me you moved to California.” I replied, “I never moved to California. My mother lied.” Then he said, “I moved back five years ago. I’ve been coming to that library every Saturday, hoping to find something that connected me to you.”