"I was pretty pissed off because I found out he slept with Stacey on the night of our one month anniversary on the show, Aleks [Markovic] told me," the finance analyst told The Daily Telegraph.
"He ditched me to have sex with another bride! At first, I was totally beside myself and so angry. But my philosophy is not to hold onto any negative energy."
While Mikey's sneaky behaviour frustrated her immensely, Natasha was more perturbed her television husband and single mum Stacey had ulterior motives.
"In a way, I felt that Stacey and Michael made such a mockery of the experiment because in the end you find out they stayed until the end despite knowing they both cheated on each other," she said, adding she's still unsure why the law graduate is in denial.
Drama aside, Natasha says she's glad she aired Stacey and Mikey's dirty laundry to the rest of the group however is ready to move on with her life and close that nightmarish chapter.
"I just want to put this nightmare behind me and use this platform to really help people."
As we know, the bride had a tough time adjusting to life in the experiment and was eventually booted off the show after spiralling out of control.
"I had to leave, we had to write leave," the beaten-down reality star said on KIIS FM's The Kyle And Jackie O Show last month. "I had a breakdown and really needed to leave for my mental health.
According to Natasha, the pressure to advance her troubled relationship with Mikey along with a number of scandals she found herself in the middle of eventually led to her demise.
"After parents day, I had a panic attack in the toilet with my mum for like an hour and a half. Afterwards, they filmed Mikey coming back saying 'let's try and do this' but I was already too tired.
"After that, I just shut down. Mikey and I got in a good space and then it was decided it wasn't good for me to be on the show. I lost it and started crying.
Rumours they were sent packing have been circulating for months, with the finance analyst revealing MAFS producers tried to coerce her into revealing personal details about her upbringing, despite telling them she wasn't willing to do so.
“Things happened in my childhood, which I didn’t want brought up. I was just anxious. Childhood trauma is nothing we can control and it was wrong of them to bring it up. I have had a lot of things happen in my past, which were brought up on the show, which is the reason I left."