N-VAR 着迷;困扰;强迫观念 If you say that someone has an obsession with a person or thing, you think they are spending too much time thinking about them. 着迷;困扰;强迫观念
She would try to forget her obsession with Christopher. [+ with]
她会努力忘记对克里斯托弗的迷恋。
95% of patients know their obsessions are irrational.