For Kristen Stewart and Rupert Sanders, it wasn’t just a matter of if they would get caught — it was a matter of when.

Randy Bauer, owner of top paparazzi agency Bauer-Griffin, told that “he heard that Us Weekly assigned [paparazzi agency] FameFlynet to follow Stewart and Sanders on a tip that the two were getting busy behind closed doors, or as it looks now, even out of doors.”

And although there have been rumors circulating about the length of Kristen and Rupert’s affair — including fabricated quotes from wife Liberty Ross’s brother — the history of these photos would prove if the affair was just a “momentary indiscretion," as Kristen claims it was.

The question now is just how long Kristen had been cheating on long-time beau, Robert Pattinson. Weeks? Months? Either way, it looks like the two won’t cohabitating again anytime soon.