A woman whom the narrator meets during a support group.

A man that the narrator meets at a support group for testicular cancer.

The narrator accidentally meets an old friend and is disappointed because the other doesn't care any more, although they've gone through a lot together.

After that day, the narrator never met her again.

The song's narrator meets a woman whose man had walked out on her.

It was not the number of things, but of "persons" the narrator met.

The following night the narrator meets this man again.

The narrator then meets his friend at the bar and ask the friend what is wrong.

The song is about a girl whom the narrator meets at the supermarket.

And what about the vanishing girlfriend the narrator meets on the job?