Unrequited (adjective)
字義
(of a feeling, especially love) not returned.
單方面的 (愛情)
例句
I am a victim of unrequited love.
Dogs love wholly and completely. Cat owners, however, often feel unrequited affection from their pet.
音檔來自
The Holiday - https://www.youtube.com/watch?v=OGrSRXL7mYc