New details have emerged about the end of Princess Diana‘s marriage to Prince Charles.

An updated version of a memoir written by Diana’s former bodyguard Ken Wharfe has revealed the late royal gave up on her relationship with Charles, now 67, after he suffered injuries in a 1990 polo accident.

prince charles princess diana camilla parker bowles getty images

Charles and Diana in 1981 (left) and Charles and Camilla in 2005 (right).

When Diana went to see her husband in the hospital following the incident, the mother-of-two — who sadly died at age 36 in an August 1997 car crash — was rejected by Charles. But, he did accept a visit from his then-mistress, Camilla Parker Bowles.

MUST SEE: Princess Diana and More Celebrities’ Last Words Before Death Revealed — Get the Devastating Details

“Diana confessed to me… with absolute determination, that this was the last straw,” Wharfe wrote. “Her compassion was wasted on her husband… what the prince didn’t want, the public did.”

For the full story on Princess Diana, pick up the new issue of Closer Weekly on newsstands now!

closer cover