Dear Mr. Coffee Guy
I did not expect you to find the letter, much less buy me free coffee. How did you know I would come back? Are you a stalker by some chance? Was it all a ruse to catch my attention? Do you plan on gaining my trust then kidnapping me and imprisoning me in some basement for your entertainment and then offing me once you're bored??? Or maybe I'm just blowing things out of proportion? Right? Anyways, the coffee tastes great so I'll give you plus 4 on trust points. I hope you're not some weird creepy dude.
Sincerely,
The Person Who Left The Previous Letter