I recommend "Oath of Green Shirt" to you. The story tells that Song Gui Chen and his sworn enemy Du Qingshan were childhood sweethearts, but they had completely different personalities. They had experienced many sweet times together during the Northern Song Dynasty, as well as many conflicts and breaking-in. If you like ancient novels about love and enmity, this book should be very suitable for you. I hope my recommendation will make you like this story. Muah ~