This is a short story that was originally published in the KUF anthology Hearts and Arrows. It's a decent length for a short, definitely not flash fiction.
Even though the theme was Valentine, it could easily have been in the Halloween edition. It's about how social media could be in the near future and is very scary indeed. You could really see it happening as portrayed and hope to goodness it doesn't.
The tenseness was ramped up and I felt myself reading quicker and quicker as the story built up to it's climax.