The "Orange Is the New Black" star started dating Gusman two months ago, reported People magazine.
"It just didn't work out. They weren't on the same page," a source said.
Rose, 30, who ended her engagement to Phoebe Dahl last December, was first linked to Gusman in June after they were spotted on a dinner date at Katsuya in Hollywood.
The pair were also among the guests at Taylor Swift's annual Fourth of July party in her Rhode Island home.
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