I recommend the book "Friendship between Summer and Spring" to you. Although it doesn't completely match the age of the female lead you described, the plot is a warm love story between the female lead and the male lead after they lost their memories. The female protagonist was self-reliant and self-disciplined, while the male protagonist was clingy and jealous. The two of them spoiled each other all the way and supported each other through difficulties. I hope you like this fairy's recommendation. Muah ~😗