Rosie O’Donnell still thinks about her “painful” fallout with once-close friend Ellen DeGeneres.

During Monday’s episode of the “No Filter with Kate Langbroek” podcast , O’Donnell reflected on the rejection she felt when DeGeneres told Larry King in 2004 that she didn’t know the fellow comedian-turned-talk-show host and that they weren’t friends.

O’Donnell, 63, recalled standing by DeGeneres’ side when the latter came out as gay on her “Rosie O’Donnell Show,” which ran from 1996 to 2002, which inspired the former to come out as well.

“I wouldn’t leave her out there alone. I couldn’t do it,” O’Donnell told Langbroek, adding that she “had to stand by her and hold her hand.”

But according to the actress, DeGeneres, 67, “never really … appreciated that moment.” She pointed to the “Larry

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