The idiom "fancy someone" means to have a romantic or sexual attraction towards someone. It is commonly used in British English and is equivalent to "having a crush on someone" in American English.
You can use this idiom when you want to express your feelings towards someone you are attracted to. For example, you can say "I fancy him/her" or "I have been fancying him/her for a while now". It is often used in a casual or informal setting, such as among friends or in a romantic context.
It is important to note that this idiom is not appropriate in professional or formal settings. It is also important to use this idiom with caution as it can be considered impolite or offensive in certain situations.
• She fancies him, but he doesn't seem to notice her.
• The new art exhibit is so fascinating, I fancy going back to see it again.
• I don't fancy going to that party tonight, it sounds boring.
• I fancy my classmate from the science club.
• When I was younger, I fancied becoming a famous singer.
• After years of living alone, she finally fancied the idea of starting a family.