How would you respond? (A social experiment)

[Silver]

Imagine, if you will, a public business you enjoy visiting more than any other place. Now imagine that you frequent the place quite regularly.

Imagine, as you pull into the parking lot, seeing someone sitting in the passenger seat of a vehicle. The person appears normal. You go into the business, do your thing, spend an hour or two there, then you leave and still see the person in the passenger seat of the vehicle next to yours. What is your initial thought/judgment of this person?

Now, fast forward a week. Imagine that you have visited your favorite place several times and each time you've seen the vehicle in the parking lot that same person is sitting in the passenger seat. Granted, the vehicle hasn't been there every time you've visited, but just enough to make you think harder. Now what do you think of this person?

Now, fast forward a month. You haven't been able to get enough of your favorite place, and you have continued to see the same vehicle with the same passenger quite regularly. What is going on in your mind? Are you in any way concerned? Will you confront this person?