I am grateful for my entire family, my long time girlfriend, Amber, and friends as we prepare to celebrate a glorious new year together," she wrote, discussing the anniversary of her bone marrow transplant.
One year ago Sunday, Roberts reached the 100 day mark following the risky procedure to treat myelodysplastic syndrome, a rare blood disorder (in 2007 she was diagonosed with breast cancer and after treatment went into remission). Her sister, who she also thanked in the post, was her donor.
Roberts has been out to friends, family and co-workers for years, but this is the first time she's publicly identified herself as gay.
Laign, who has been Roberts partner for 10 years, is a licensed massage therapist with a private practice in New York specializing in patients dealing with injury.
t I am at peace and filled with joy and gratitude," she wrote before wishing her followers a "Healthy and Happy New Year."
"GMA" issued a statement of support later in the day, saying, "We love Robin and Amber, who we have all known for a long time. We were so touched by her Facebook message today and so thankful for all the loving support she has in her life."
The longtime newsmaker has also received supportive tweets from fans and several of her star pals.
Good morning, America! Congratulations, @RobinRoberts.— Ellen DeGeneres (@TheEllenShow) December 30, 2013
@RobinRoberts, I am so happy for you and Amber! You continue to make us all proud. -mo— FLOTUS (@FLOTUS) December 30, 2013