Drown Me in Your Obsession

Su Yanxi wants the marriage she has been promised. Her parents died when she was small and the Gu family took her in and raised her, and she is engaged to Gu Yanze. Shortly before the wedding, Gu Yanze tells her that the marriage will be an open one and that each of them can do as they please. She blacks out and falls into a swimming pool. Fu Linchen, a close friend of Gu Yanze, pulls her out. He has loved Su Yanxi since they were children and has kept it to himself. After this he stops keeping it to himself. He flirts with her where others can see, courts her in private as well, and fights for her openly. Su Yanxi, a step at a time, starts to return his feelings.