They had been dating from last seven months, reported E!Online.
"Calvin and Aarika split around the time of the Brits (awards) last month. They were both into each other for a long time but it just didn't work out and they'll stay friends," a source said.
"Calvin is always really busy and is constantly travelling around to DJ gigs so he's happy to be single for a while," the source added.
Harris' representative refused to comment on the issue.