On Monday's episode (15 December), viewers saw Louise's brother Sam admit that he had kissed a girl, moments after parting ways from Tiff at her birthday party.
Sam's revelation only came after Lonan O'Herlihy confided in Binky Felstead that he had seen Sam kiss a girl who "definitely wasn't Tiff". It wasn't long before Binky broke the news to a devastated Tiff ahead of the girls' spa weekend.
Later in the episode, Sam went to Tiff's house in an attempt to give his side of the story.
Tiff blasted him: "If Lonan hadn't told me I'd still be with you. I don't think you even thought about me when it happened. You're only upset because you've been caught."
Pleading with Tiff, Sam said: "I feel like you never want to talk to me again. I really, really, really need you in my life in some sort of way. I'm so sorry. I know I f***ed up."
But Tiff declared: "I'm glad that this happened now because now I know what type of person you are, and I don't need to associate myself with people like you. I thought you were a nice guy and you're obviously not."
Taking to Twitter after the show, Sam said: "Couldn't be more of a mug..... I've let myself down. I'm going to learn from my mistakes and be the person I know I can be. #future."
Couldn't be more of a mug..... I've let myself down. I'm going to learn from my mistakes and be the person I know I can be. #future— Sam Thompson (@SamThompsonUK) December 15, 2014
Sam and Tiff first enjoyed a romance on the show last month, but they hit a rocky patch when it was revealed that Sam let a girl sleep over in his bed. The girl in question, was later revealed as Fran Newman-Young.
With the news out in the public, Fran insisted that nothing happened and Sam also strongly denied cheating. Soon enough, Tiff decided to give Sam another chance, saying she was "happy to start again", and Sam even declared: "I like you so much that I can't see myself doing anything stupid."
However, after this latest revelation, it looks like the pair won't be rekindling their romance anytime soon.
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