After 30 years, Carol Hathaway and Doug Ross are still endgame.

It always had to be Carol and Doug, in the end, the actress told theTelevision Academy.

She revealed how they kept the reunion a secret from everyone, including their co-stars.

Julianna Margulies and George Clooney stand together in their hospital uniforms in a promotional photo for ‘ER’

Julianna Margulies and George Clooney in ‘ER’ (1994).NBC/Courtesy Everett Collection

Co-starNoah Wyleeven consoled her.

ShowrunnerJohn Wellsthen went to her trailer and told her, Look, we have the right ending for Carol.

But we cant tell anyone.

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George Clooney and Julianna Margulies inER. (NBC/Courtesy Everett Collection)

Because if it gets out, it wont be a surprise.

So heres what were going to do.

I was like, I wish he had warned me before I went into that table read!'

And John said, Were going to fly the two of you out [to Seattle] separately.

I think it was only our DP, our cameraman, John Wells, me and George.

It really worked, she said of the scene.

Honestly, every now and then Ill catch it when Im flipping channels or something.

And I still that music I still get very emotional.

It was the right ending for them because Carol and Doug were destined to be together.

The pair returned once more for the 2009 episode Old Times during the shows final season.

ERis responsible for our careers.

I will always be indebted toER, said Margulies.