Chapter V, A Glimpse into Gatsby

In chapter V of The Great Gatsby, Fitzgerald shows us a glimpse inside Gatsby’s vulnerable side. Up until this point in the novel, Fitzgerald has kept Gatsby mysterious, and in the dark. Just a chapter before, Nick says “My eyes fell on Gatsby, standing alone on the marble steps and looking from one group to another with approving eyes.” This quote keeps Gatsby at a distanced, almost an unattainable entity with a slight air of arrogance about him. However, in chapter V, this cover is shattered when Daisy renters Gatsby’s life. He turns into a child-like figure, unsure of how to act, something the reader has never seen before. My question is why has Fitzgerald chosen to keep us a secret to Gatsby’s life up until this point? Would it have changed the book if we were able to see more of Gatsby’s real personality? Personally it would make Gatsby more relatable if we had seen this side of him earlier in the book. Any other ideas?