Robin Roberts, an anchor on ABC’s “Good Morning America,” publicly acknowledged her same-sex relationship with her girlfriend of 10 years for the first time on Sunday.

Roberts disclosed her relationship with Amber Laign in a Facebook post about Roberts’s illness. She was diagnosed with breast cancer in 2007 and with myelodyplastic syndrome, a rare condition that affects blood and bone marrow, last year.

In the post, she refers to her separation from her dog KJ and thanks members of her family as well as Laign for their support.

“Hard to believe this was 1 year ago today..when I reached a critical milestone of 100 days post transplant...and KJ was finally allowed to come back home,” Roberts writes. “I am grateful for my entire family, my long time girlfriend, Amber, and friends as we prepare to celebrate a glorious new year together.”

Roberts and Laign met in San Francisco, and Laign, a massage therapist, is from the Bay Area, according to media reports.

Their relationship was known to their colleagues, friends and family for years. “We love Robin and Amber, who we have all known for a long time,” read a statement issued by ABC News.

But the pair did not see the need to make their relationship public until now, when Roberts wanted to credit her partner for helping her through the illness, according to TMZ.