Can you recommend some touching novels?

He probably saw it ten years ago, so his impression of it was very vague. The first story was about a couple. It seemed like the boy was studying abroad. The restaurant where he lived exploded, and his ears were blown up, but he didn't tell his girlfriend. He even went to a concert to help his girlfriend record music. Anyway, it was a very touching love story. The truth was only revealed in the last sentence. I remember there was a sentence that left a deep impression on me. It said that everyone was a semicircle and could only be complete when they were put together. That was the first time I saw this sentence. The second story was about maternal love. It was about a mother who had a terminal illness. The child was still very young. The mother wrote many letters and asked the father to take one out every week for the child to read. The letter said that the mother had gone on a business trip to a faraway place. During this time, a new mother came. Slowly, the child read the letter and mistakenly thought that the new mother was the original mother. Therefore, the child adapted to the new mother without pain. This story was very touching. I hope the expert can tell me the topic or give me a link. It's better to post it directly. I'll give marks to the first person to post any article.