A source told Page Six Nordegren took a quick vacation to the Hamptons with friends following the split from the billionaire.
"She flew in for just the weekend," the source said. "She is single again and hotter than ever."
Nordegren, 34, had been dating Cline, 56, since March 2013.
Friends said the two "drifted apart."
"They didn't spend enough time together. He has a thriving business and has been traveling a lot," one source said.