'I have always prided myself on behind candidly honest, letting go of negative influences. I do have a tendency to people please even if its not true to myself.'
Elizabeth concluded by saying that it's now time for her to 'take [her] own advice' and stop 'becoming submissive' to others.
The MAFS star’s scathing post is the culmination in a feud between the reality star’s that has been brewing for days.
On Wednesday Elizabeth, 27, appeared on Today Extra to talk about an alleged spin-off show between herself and Sydney-based Cyrell.
However, the jewellery store manager completely denied all knowledge of the supposed show - rumoured to be based on Paris Hilton and Nicole Richie's hit reality show The Simple Life - and accused Cyrell of staring the rumour.
'Elizabeth and Cyrell are joining forces to star in their own reality TV show!' Sonia Kruger began.
David Campbell then added: 'So we've brought Lizzie in to tell us all about it... What is this project with Cyrell?'
The baffled-looking Married At First Sight star replied: 'I don't know. Erm, yeah, I just heard about it and I have no idea...'
Following Elizabeth’s TV interview, Cyrell spoke to Kyle and Jackie O, slamming her Married At First Sight co-star for claiming she knew nothing about their upcoming project.
'To be honest, even that was a bit of a shock to me. She'd contacted me regarding [the rumoured reality show],’ Cyrell explained.
'At the time I told her I didn't know what that was, pretty hilarious though.'
Looks like the former best friends are officially dunzo!