Leto and Hathaway star as Adam and Rebecka.

For him, the role of Adam was a new challenge.

He reportedly became so buried in source material that once production began, he “became Adam Neumann.”

Anne Hathaway and Jared Leto smiling

Hathaway plays Rebecka, Adam’s wife who the public doesn’t know much about.

So, ‘sweetness’ was the word that really opened her up for me."

It was something she said she brought to Rebecka’s character every day.

Anne Hathaway and Jared Leto posing on the red carpet

“But he was so sweet, calm, and supportive of me throughout this whole process.”