More than a year after Robin Williams' death, his widow Susan is opening up for the first time about the last days of the late actor's life and how she's been dealing with the tragic loss.

"It's the best love I ever dreamed of," Susan says in a clip from the upcoming interview on Good Morning America. When Amy Robach asks if her husband was "spiraling out of control" prior to his death, she tearfully describes finding his body the day that he committed suicide on August 11, 2014. "I just screamed, 'Robin, what happened? What did you do?'"

Robin Williams' daughter Zelda shares heartwrenching post about her struggle with depression

The interview will also feature never-before-seen home videos from the couple's wedding and life together, some of which can be seen in the clip.

ABC Breaking News | Latest News Videos

Susan Williams' full interview will air on Tuesday, Nov. 3 on Good Morning America with more footage airing later that night on Nightline at 12:35/11:35c on ABC.