色衰爱弛

sèshuāi-àichí

[lose beauty as well as affection; one's love of the woman disappears after she has passed her prime] 色: 姿色。 弛: 减退。 女子因姿色衰退而使受到的宠爱减退

昔者弥子瑕有宠于卫君...及弥子色衰爱弛, 得罪于君。 --《韩非子·说难》