Hobbies are a fun way to spend time for many people. They are often used to fill a gap in life when a person is lonely or wants to be creative. Hobbies are meant to be a fun way to learn new things. They often start with a beginner's class. One way to find out how flexible a person is would be to suggest starting a new hobby together. If the person is interested, it might lead to a long term dating relationship. If they are not, then perhaps there is a basic incompatibility, and it is best to find out early in the relationship. If nothing else, trying out a new hobby on a date can be a fun way to spend a pleasant evening.