“When your friend goes on a date for the first time in over a decade, you and your boyfriend need to make sure she’s safe,” the video reads.
Amateur sleuths wore hoods and sunglasses and even occasionally hid behind pillars to avoid being seen.
“It was fun, 10/10 recommended to follow your friends,” the caption reads.
For a moment, users gasped as the two couples crossed paths but miraculously did not interact.
The original video has been viewed 9.5 million times since its release.
According to to the next video Posted the next day and has been viewed almost 4.5 million times, the spies were stopped by a passenger and asked what they were doing. “My boyfriend should have told someone about us stalking our friend’s first date,” she wrote, noting that the stranger was “invested” in the saga.