Rosie O'Donnell's Rumored Affair Causing Divorce Drama

Rosie O'Donnell's alleged affair with married Dana Caruso Schiff is now complicating the former Broadway star's divorce from husband David "Scott" Schiff, RadarOnline.com has learned.

According to Page Six, there's a nasty custody battle brewing over the former couple's two children, because Scott is "concerned about them being around Rosie," sources say.

Insiders told the publication that Rosie and Dana have been in a relationship for at least six months after a longtime friendship. Rosie is even godmother to Dana’s daughter, Plum.

As RadarOnline.com previously reported, Scott become suspicious of Dana's friendship with Rosie last year.

"Dana’s late-night escapades became so frequent that even their Upper East Side building’s doormen began to suspect that she was having an affair,” a source told RadarOnline.com. “Dana stopped wearing dresses, and cut her hair short. I think she was trying to look different because of her new relationship with Rosie.”

In an effort to save their marriage, the hefty 300-pound investment banker began losing weight, but it was too late.

Dana, who has appeared in the shows Cats and Les Miserables, had “transformed into a different person,” the source said.

“She stopped wearing dresses, and cut her hair short. I think she was trying to look different because of her new relationship with Rosie.”

When reached for comment, Dana replied, “absolutely no comment,” and a rep for Rosie merely confirmed their friendship.