梦里少年一往情深
[mèng lĭ shăo nián yī wăng qíng shēn]
Expresses deep feelings for someone or something from dreams or memories of youth. '梦里' (dream), '少年' (youngster), and '一往情深' (deeply infatuated/unforgettably fond) combined may represent nostalgia for lost young love or a yearning that began in dreams/adolescence.