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The alleged victim of a domestic assault that was accidentally livestreamed across the globe has been charged with assaulting the man at the centre of the livestream.

Sydney man Luke Munday, 26, was using Amazon-owned streaming service Twitch to broadcast his game of Fortnite in December last year and was charged over the incident involving his partner Grace Campbell.

On Sunday morning, the couple again became "involved in an argument" according to a statement provided to the Herald by NSW Police.