我怕时间久了你会变淡
[wŏ pà shí jiān jiŭ le nĭ huì biàn dàn]
This expresses the sentiment 'I'm afraid you would get away because of the long-time absence'. It reveals the fear that with the passage of time, another person's importance in one's heart might become fainter and relationships become looser, conveying a sense of helplessness and melancholy over lost time and love.