This show is almost certainly from the 80s, maybe early 90s. A long-haired, slender blonde young woman arrives on Earth escaping from some organization, I think, and encounters a man who has to help her. (He might be from the CIA or a cop?)
As soon as they meet, he has sexual thoughts and she acts offended, revealing that she can read minds.
In one episode, the guy is in some kind of music class and the teacher asks the students if the bell in the school makes music; another student says that it does, based on a dictionary definition of music, which leads the protagonist to realize he's an alien as well.