Rejected bachelor and "international model" from the first season of "The Bachelorette Australia", David Witko, has lashed out at Sam Frost, 26, a week after Frost chose Sasha Mielczarek, 30, as her winner.

Dubbed “the most hated man in Australia” during his “The Bachelorette Australia” stint, Witko, 31, took to Instagram to criticise Frost. He posted a screen grab of a fan question from a News.com.au Q&A.

The screen shot shows a fan question, which reads, “ I have to ask, what was Model David like in the house? Was he always as “interesting” as he was portrayed to be on the show? PS — loved how you put him in his place!”

Frost then responded with a comment saying Witko was exactly "how he was portrayed" in "The Bachelorette Australia." She also added, “Interpret that as you will. And PS thanks for the support of old mate fire guts.”

“I actually don’t care; but it’s pretty sad,” Witko captioned the screen grab. “We spoke for a total of 10 minutes, and she knows me? What about that donation to your charity I made at the initial meeting? Not shown.”

In the caption, Witko questioned Beyond Blue’s choice of Frost as an ambassador and called her a bully. He wrote, “You’re being a bully Sam, and you represent @beyondblueofficial @fro01 screenshot is from news.com.au questions #oldmatefireguts ???”

Beyond Blue is an Australian non-profit organisation that addresses issues related to mental disorders, anxiety disorders and depression. Frost’s mother was one of the people helped by the independent organisation and “The Bachelorette Australia” star has been supporting them since.

Frost is yet to respond to Witko’s comments accusing her of bullying. Meanwhile, she recently received some advice from Trista Stutter, the star of the first American version of “The Bachelorette.”

Asked about advice she would give to Frost, Sutter told WHO, “If she can, she should make it happen quick. You just can’t create a strong foundation with distractions of other guys, distractions of the cameras, not being in your element and being home, safe and secure.”

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