For a first online date I always start somewhere reasonably cheap ($20-40pp) and dont pay if the girl rushes and wants to run right after food. Just before getting the check, I just ask so what do you want to do after? If she wants to run and doesnt have a good excuse, shes obviously not interested.
Go Dutch and if she whines you say this wasnt a date, were just hanging out. If she tries to make a scene in a restaurant youre known, just cut your loses.
...c) All of the above.
She didn't say she went out 5x with each guy. She said she had a rule of NO MORE THAN 5 dates with one guy. Probably most guys she went on one to three dates before moving on.