Cathriona’s mother, Brigid Sweetman
, and estranged husband, Mark Burton
, charge "The Mask" star pretended to be the “grieving, good guy” — even serving as a pallbearer
as they laid the troubled Irish makeup artist to rest. But then Carrey selfishly “reneged on his promise” to cover the expenses, according to the parents’ complaint in their wrongful death lawsuit filed against the actor last year. “With all his millions, he couldn’t fork out a few thousand to pay for his girlfriend’s funeral. It makes him look like a cheapskate AND a louse,” said an insider.