Article continues below advertisementLori Loughlin is reportedly devastated over her and Mossimo Giannulli's shocking split.The Full House star apparently thought her separation from Giannulli after nearly 28 years of marriage would be nothing more than a short break - but his actions haven proven otherwise."Lori's doing her best to put on a brave face, but the scale of heartbreak and humiliation is on another level - Mossimo has totally checked out of the marriage," a source spilled to a news outlet on Tuesday, October 21.