Aleks revealed that she and Ivan broke up in February this year due to differences in "values, wants, need and lifestyles."
"My MAFS journey was one that I will never forget. I learnt so much about myself and what I truly want and need for myself and in a partner. I do not doubt that my soulmate is out there somewhere," she penned on Instagram shortly after the finale aired.
Aleks elaborated on the break up in an Instagram Q&A, explaining that she and Ivan had their fair share of arguments.
"Our lifestyle was just so different. We were just fighting a lot it was becoming toxic... So he dumped me," she revealed.
"I'm ready to settle down and have kids and I just think our lifestyles wouldn't match up with raising kids together. I need my values to match up with a man. I need them to be similar to me on how they want to raise kids," she said, adding they're "much better off as friends".
Rumours of a potential make-up between Aleks and Ivan surfaced in August when Aleks confirmed to Perth Now that she was moving to Sydney - the same hometown as her MAFS ex.
“The move to Sydney and finding a job in Sydney was a little bit easier because people had already met me through MAFS," she told the publication.
However, Aleks shut down any chance of a romantic or professional reunion with Ivan, who also works in real estate in Sydney.
“There’s no industry competition with (Ivan) because we work in different areas," she revealed, adding that she's also launching her own makeup brand.
Fans were stunned by Aleks' new look when she shared a celebratory post to mark her 28th lap around the sun this week.
The real estate agent agent and former MAFS bride looked radiant as she posed with a cocktail at Sydney's iconic Quay Restaurant.
“'Old enough to know better, young enough to do it anyway,'" Aleks wrote in her caption.
"28 is going to be my best year yet! Cannot wait to smash more goals. So thankful for all the beautiful people I have met this year and grateful for every single one of you for supporting me and following my journey! Thank you to the most amazing person for making today so special @beebarkaren LETS DO THIS 28.”