Jim Carrey reacted with shock and sadness Tuesday after his on-and-off girlfriend Cathriona White died of an apparent suicide.

White, 28, a makeup artist from Ireland, was found dead Monday night in a Los Angeles residence. Nearby were pills and a note "addressed to Mr. Carrey," LA County Coroner's Chief Ed Winter tells the New York Daily News.

White, who went by Cat (see Instagram post below), and the 53-year-old "Dumb and Dumber" star had dated at various times since 2012.

"I am shocked and deeply saddened by the passing of my sweet Cathriona," Carrey says in a statement. "She was a truly kind and delicate Irish flower, too sensitive for this soil, to whom loving and being loved was all that sparkled. My heart goes out to her family and friends and to everyone who loved and cared about her. We have all been hit with a lightening bolt."