(nowmagazine.co.uk ) - David Duchovny has sparked speculation he's reuniting with estranged wife Tea Leoni . The X-Files star reportedly joined his family to go trick-or-treating in New York on Halloween. 'They were very cute and holding hands,' an onlooker tells the New York Post. David, 48, who checked into rehab for sex addiction in August, and Tea, 42, announced their separation last month. The pair, who have been married since 1997, have daughter Madelaine West, 9, and son Kyd, 6.