When he found out one of his victims had contacted police, he threatened to post videos of the victim all over YouTube, saying "prepare to be famous all over the internet".
Bose migrated to Australia from Fiji during his school years and had no criminal history before the rapes, but had a subsequent matter in August 2017 for which he served two months in jail.
In that case, Bose assaulted and threatened to kill a woman he also met on Tinder.
In court on Thursday, Judge Trevor Wraight was told Bose had no remorse or insight into his offending, maintaining he was innocent.
More of Bose's lies were exposed in court, with the 33-year-old claiming he'd worked as a sous chef in a five-star Swiss hotel, that his father was a senior employee of the Fijian government and that his mother had worked for the United Nations.
Judge Wraight said the claims were "consistent with the way he views himself and presents himself to women on Tinder as an international man of mystery".
"He's a liar, and clearly is and was to these women," he said.
Bose, who has been in custody for two years, will be sentenced August 1.
