The couple's on/off relationship came to an end in February, and although they subsequently tried to work through their problems, Fox confirmed in June that the romance was officially over.
Fox has since admitted she will always be close to Green, because he was her first love -- but the pair now appear to have revived their romance.
The Transformers star was spotted holding hands with Green after a romantic sushi dinner in Toronto on Sunday.
The actress has flown into the city to support Green as he films new TV movie The Wild Girl, which went into production last week.
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