RED FLAGS

In general.
  1. Fedoras
  2. "I just got out of a long term relationship"
  3. The Flag of the People's Republic of China
  4. Expiration dates
    Close to/after the actual date
  5. Interchangeable first and last names
  6. Backhanded compliments
  7. Profile pictures consisting only of pictures that are not the person
  8. C+ health inspection ratings