At first glance, it's an unlikely pairing: the 47-year-old TV presenter, former model and all-around glamazon Charlotte Dawson, and a teenager headed for nursing school.
Twitter brought 18-year-old Sam McCauley together with his "dear friend" and mentor but it also pitted her against legions of anonymous tormenters.
Now, in the wake of her death, he and two friends have launched a campaign they hope will ensure no one else suffers online the way she did.
The Charlotte's Law petition on Change.org calls on Australian governments and law enforcement agencies to put existing anti-bullying and harassment laws to use, and has already garnered 35,000 signatures.
The petition also wants social media firms to take a proactive role in preventing cyber-bullying and monitoring hate posts.
Dawson was outspoken about her depression and in 2012 publicly waged war on so-called Twitter trolls.
She was found dead in her Sydney home on Saturday.
Mr McCauley told AAP he wanted her death to serve as a catalyst.
"We thought, what can we do to make Charlotte proud, and continue her legacy?"
"The main thing I would like to see after this is that no person ever has to suffer the way Charlotte did," he said on Monday.
He remembered Dawson, whom he met in person for the first time last year, as generous and always ready with advice and guidance.
"She was a tortured soul, she had a lot of demons," he said.
"But she was also a really caring and kind soul that thought of everyone before herself."
Parliamentary secretary for communications Paul Fletcher, who is leading the federal government's cyber-bullying law reforms, on Sunday described Dawson's death as "tragic".
But the government's planned reforms are aimed at protecting children.
"In our society there are a range of areas where we put in place extra protections for children in recognition of the fact that they are not necessarily able to make judgments or protect themselves in the same way that adults are," Mr Fletcher told AAP.
"But if Saturday has taught us anything, it's that children aren't the only ones who are affected by this," he said.
"Obviously there's a dark side of the internet, but I think everyone should be able to use it without fear of being attacked."
Dawson's sister Vicky, who lives in New Zealand, will reportedly arrive in Australia on Monday to make funeral arrangements.
* Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or Suicide Call Back Service 1300 659 467 or follow @LifelineAust @OntheLineAus @kidshelp @beyondblue @headspace_aus @ReachOut_AUS on Twitter.
