No one was more shocked than best friend Lauren Pope who was not exactly impressed with the breaking of the 'girl code'.
It was clear on Wednesday's episode that Chloe was not expecting the reaction and silent treatment she got from Lauren but that doesn't seem to mean she's prepared to apologise.
With only a 'drunken kiss' in their past Chloe doesn't seem to think she owes Lauren anything, especially if this retweet is anything to go by:
Life is too short to worry about what others think. Do whatever you have to do, and do it for you.— ILLUMINATI (@ILLUMlNATI) March 28, 2014
The pair have yet to speak on social media since the revelation.
Meanwhile Chloe has posted a picture to hint at just how much she cared about Mario and how painful the split is for her.
Seems like the kind of time you could really do with having your best girlfriend around.
Go on ladies kiss and make up!
Do you think Lauren's overreacting or deserves an apology? Tweet us @handbagcom
TOWIE: CHLOE SIMS HAS 'BROKEN THE GIRL CODE'
TOWIE: HAS DANIELLE FORGIVEN LOCKIE FOR CHEATING?
MORE TOWIE AND TV NEWS AND GOSSIP