The pair announced on Made In Chelsea they were planning to take a break, which later became a permanent split after the hunk started a fling with Mimi Bouchard.
But have they secretly reunited?
Taking to Twitter, Lucy Watson’s sister shared a cryptic message with her 103k followers, hinting they were back together.
“If you love something set it free. If it comes back to you, it’s yours – forever,” it read.
And fans rushed to speculate on exactly what this meant – with many questioning whether Tiffany had got back with the Celebrity Big Brother star.
“Basically saying you will get back with Sam then lol,” one said.
Sam Thompson gets emotional after scenes air on Made In Chelsea where he ends relationship with Tiffany Watson [Wenn]
“Hope you and sam boy are sorting things out,” another replied.
“I hope that means you and Sam are back together,” a third commented.
While a fourth added: “It sounds like you already know what your heart wants, perhaps it just needs time to heal before going back. Xx.”
Her cryptic message comes after Sam shared a string of heartbroken tweets on his own account, suggesting he was really missing the blonde beauty, after their split.
“Today has been the worst day of my life as far as I can remember,” he told his own 156k followers.
“I never knew exactly how much one person could effect my life.
“The only way is has to be up. Can’t get much lower haha. And yes I’m fishing for some love….kinda need it ha.”
When a fan responded that he had “lost a good woman” in his ex, he was the first to agree.
He responded to the user in question, simply telling her: “I know”.