"There was no manager involved," Weiss said. "She was estranged from her family. I felt I was a lifeline for her. She was texting me constantly from her cellphone."
Weiss said that he had known Spears since she was 16 when he signed her for a contract with Jive Records.
"She's a superstar, a household name in every country in the world," Weiss said.
On cross-examination by Lutfi's attorney, Weiss said Spears' current contract requires one more album. Weiss said he has been in talks to persuade Spears to join him at his new label.
"It would be nice to be back together, if that happened," he said.