Rosie O'Donnell secretly married her girlfriend Michelle Rounds in June.

The talk show host revealed the surprising news on her blog Rosie.com on Monday, explaining the couple brought their nuptials forward after Rounds was diagnosed with desmoid tumours, a rare and often fatal disease, which only affects three in every one million people.

O’Donnell wrote: "my wife Michelle was diagnosed with desmoid tumors in june a mysterious rare - too often fatal disease that affects 3 in a million people.

"we were to wed 10 days ago but her illness forced us to postpone the wedding luckily - as i was in ICU that day...

"we married in private before her surgery just the 2 of us (sic)."

Although the ceremony in New York City wasn't attended by friends and family due to the circumstances, the happy couple are planning a huge celebration with their loved ones as soon as possible.

O’Donnell added: "when we r both well enough will have the wedding of r dreams surrounded by those we cherish thankful for the love and support so many have given us during these trying times, including all of u stranger-friends connected thru invisible strands of wi fi."

O’Donnell recently had her own health scare, when she suffered a heart attack at her home but credited her survival to quick Internet research on her painful symptoms and a Bayer aspirin she had seen recommended in TV commercials.