Chp 4: Getting to know Gatsby

Reading more into this book, I learn more facts about Gatsby. Before chapter 3 I only knew a couple facts about Gatsby. I knew that he throws parties at his house all the time and that he is a little strange. In chapter 3 , Nick said,"for he told me that he had just bought a hydroplane, and was going to try it out in the morning."(47) Gatsby asked Nick to go with him. In chapter 4, Gatsby gave Nick a ride to lunch, he was telling Nick about who he really is. Gatsby says,"I'm going to tell you something about my life. He also says,"I don't want you to get a wrong idea of me from all these stories you hear." (65) Gatsby obviously knew that lots of people tell false rumors about him and he wants Nick to know the truth. When Gatsby tells Nick about his "life", Nick doesnt believe it one bit. He says," With an effort I managed to restrain my incredulous laugter." (66) While Gatsby was telling his story , he mentioned that he's trying to forget something very sad that had happened to him long ago. (66) What is that sad thing? I think the sad thing could be his past relationship with Daisy or it could've been what happened to him as a kid or in the war.