She had been talking to Scott and Jeremy McConnell about her past relationships and admitted that, while she has never cheated on a boy, she has done something to get her own back on them.
Probed by Jeremy, Megan revealed she had slept with her ex's friend and Scotty was quick to criticise her for it.
He told her: "I hate that. That's just lowering yourself to his level."
Trying to explain her reasons for doing so, Megan said: "He cheated on me and I found out. And he sent it to me in a text message... Don't f*** with me. When I did it I was so happy."
Still not convinced, Scotty hit back: "You're degrading yourself by having a one night stand with his pal... So you fancy his mate for awhile and then you finally give in to sh*g his mate... I can't listen to this."
"I hate things like that, it annoys me." he continued. "Even if my ex-bird had cheated on me a thousand times, I would still never break up a friendship with her, just because I wouldn't want to lower myself to that level. That's the worst thing."
"I got mentally f***** up in my head because of that boy," Megan told him. "I don't give a sh*t."
As Scott left the room, she then asked Jeremy why the Geordie Shore star was getting so "aggy" over their conversation and he replied it's because Scott likes her.
"He likes you," Jeremy said. "And he's thinking would you do that to him if anything happens?"
Megan's confession wasn't enough to put Scotty off, however, and he couldn't resist hinting he was no longer single when asked by Megan about his relationship status later that evening.
She said: "What's going on with you on the outside Scotty? Because I'm completely single and I'm not seeing anybody. What's going on with you?"
He admitted he wasn't completely single going into the CBB house and questioned by Megan if he was now, the reality star replied no before gesturing at her.
Smirking, Megan asked her housemate what he had meant by pointing at her, and Scotty simply replied he was clearly not completely single.
Megan's reaction? "You're a little sh*t you are."
Since entering the CBB house together, Megan and Scotty have formed a close bond and have been spotted kissing on several occasions - even though Megan has insisted the pair are just good friends.
While Megan's ex Jordan Davies has claimed she is now Scotty's problem, following their split, Scotty's ex Ashleigh Defty has hit out at the pair for having a 'showmance'.
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