The 47-year-old "Boyhood" star, who was previously wed to Nicolas Cage and Thomas Jane and is apparently dating Eric White, said she does not want to deal with the pain of another break-up, reported Female First.
"I'm terrified of the institution of marriage. The failure of a marriage is a very personal, painful thing to come to - it's not just like breaking up, it is really painful."
Arquette said she has a "very ordinary" life and has no desire to be part of the "Hollywood scene."
