She went on to assure her followers she was coping with the split and "feeling the love" after all their kind messages.
"I'm watching Gilmore Girls and I'm okay. I'm okay. I'm really, really, really okay and I love you guys," she added.
Olivia added that she and her ex, Jackson, have always been "transparent" with fans regarding their breakup.
She also urged followers not to believe any "gossip, speculation and BS [bulls--t]" online, adding: "Unless it comes from Jackson and I directly, do not believe anything.
"If there's anything else to say, we will say it."
Jackson and Olivia announced their sudden split on Monday.
WATCH: Ella Ding and Domenica Calarco hit out at Olivia Frazer's social media claims. Story continues.
"After a wonderful 10 months together we have decided to go our separate ways," they wrote.
"There has always been a lot of love in our relationship and there will continue to be as we transition into a friendship."
"We have nothing but love and respect for one another, and no one is to blame for the end of this relationship. Simply a case of 'almost perfect'.
"We hope you all can please show compassion as we navigate this privately. Love, Liv & Jack xx"
Around the same time, a feud reignited with fellow MAFS stars Domenica Calarco and Ella Ding after Olivia alleged she had her social media accounts "shut down" during filming, while Domenica didn't.
But just a few hours later Domenica and bestie Ella were taking to their own Instagram stories to refute her claims.
"We had our Instagrams the entire time. I posted when I was in Queensland with Mitchell," Ella insisted in a series of videos.
Domenica chimed in: "We're gonna get the recipients of the photos we posted while we were in MAFS. We had all our social media accounts."
This article first appeared on our sister site, Now to Love.