The expression used to is commonly used when talking about past habits.

It means “something was true in the past, but it is not anymore.” For example,

• • I used to live in Toronto, but I don’t anymore. Now I live in Vancouver.

• • I used to ride a bicycle to school, but I don’t anymore. Now I drive a car.
  • I used to be married, but I’m not anymore. Now I’m divorced.

See also:

Used To (from Englishpage.com)