Ryan O'Neal is opening up about his longtime love Farrah Fawcett's cancer battle, while her devoted friend Alana Stewart gives ET a health update on the "Charlie's Angels" actress.

"Farrah is in stable condition. She is resting. She is eating. Her spirits are up and she is still praying for a cure," Alana said in a statement, pointing out that Farrah's condition has not changed, and that she continues to get treatment and is still fighting. "None of us, including friends and family, have given up hope."

Ryan, for his part, revealed to People.com that Farrah's anal cancer long ago spread to other parts of her body, including her liver. "Cancer is an insidious enemy," he said.

Of his current role as caretaker, Ryan, 68, told the magazine: "It's a love story. I just don't know how to play this one. I won't know this world without her." The often teary-eyed Ryan indicated Farrah's grave condition by revealing she remains bedridden. "She stays in bed now. The doctors see that she is comfortable. Farrah is on IVs, but some of that is for nourishment. The treatment has pretty much ended," he said.

Ryan told People.com that while overseas treatments pursued by Farrah initially "had great promise," eventually her condition worsened and hope started to fade for a recovery for the former "Charlie's Angels" actress. "But not for Farrah. She continued fighting. There was always a courage there, and a quiet dignity. Farrah never changed. I fell in love with her all over again because of how she handled this," Ryan said.

Farrah, 62, will tell her own journey in "Farrah's Story" -- a two-hour NBC documentary she is shooting with her friend, Alana, which airs May 15. Alana says it was never meant to be a documentary, but "Farrah just took her little hand-held camera to the doctor one day." It was the day, as it turned out, that Farrah learned from her doctors that the cancer she thought had disappeared was back.