I first encountered Sam Hughes while desperately trying to figure out the ending to the remake of Planet of the Apes; in addition to excellent speculation on that count, he had this short-short story about a time loop (later made into a fun YouTube video by Andrew Hookway).
I am your future self, and I just traveled back in time to meet you.

Variants

(1)
  1. “Time Loop” by Sam Hughes, qntm.org, 14 December 2002 (web site).
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Sam Hughes