Lucy and Dan hooked up in Marbs - but have since denied they made a sex tape there - and it was only once home that Dan said he'd found out that he was going to become a dad.
But in last night's episode (3 July), during a meal in Essex with Lucy, Billie and Sam Faiers and Jessica Wright, Ferne McCann made her boyfriend Charlie Sims tell Lucy what he had "heard on the grapevine".
"You know he said he found out about the baby in Marbs..." Ferne said. Turning to Charlie, she added: "You've heard that he knew way before Marbs that she was pregnant."
Looking uncomfortable, Charlie then replied: "I've heard both sides of the story. It's unconfirmed. I heard it through the grapevine."
Visibly shocked, Lucy said: "So he knew there was a baby before Marbella and he still… I just think that's a bit of a joke. If he knew about the pregnancy before Marbella, why did he start seeing me? That annoys me."
To make matters worse, Jessica then revealed: "Apparently on the first night of Marbella he kissed Jasmin." Sam added: "He had us all fooled."
Lucy gasped: "What?! Well there's a surprise because it's always the ones I pick!"
Unfortunately though, while Lucy shrugged it off, Charlie was furious with Ferne for "throwing him under a bus" by dropping him in it.
Clearly angry, he muttered: "You threw me under the f***ing bus with what you said. I've got nothing else to say. I'm done." Ferne then burst into tears as Charlie walked out. Oh dear!
Are you enjoying this series of TOWIE? Tell us below, as the best comment from across the website each week wins £50!