NYP: A young woman who’d just broken up with her boyfriend leapt to her death from her eighth-floor apartment on the Upper West Side yesterday, cops and friends said. Moments before she jumped at around 1:30 p.m., Sarah Adelman, a 25-year-old dental-office manager in Rockefeller Center, phoned another former beau, Steven Green, with a heartbreaking message. “She called me and said, ‘Goodbye, I love you,’ ” Green said, weeping outside Adelman’s building at 35 W. 96th St.“She’s been very depressed for a while, and it just accumulated,” said Green, adding that Adelman and her new boyfriend had broken up Sunday night.”I guess that was the tipping point.

“[But] without a doubt, that wasn’t the only cause,” Green said. “She’s been dealing with depression for many years.”

Still, “I thought she was OK,” he said.

When Adelman called him yesterday, “I was trying to convince her not to” jump, Green said. “She was writing a note while we were on the phone.”

Green, 23, a paralegal, said he phoned 911 immediately after they hung up, but his friend had already jumped.

A cop was spotted leaving the building with an evidence bag that contained a silver bracelet, silver watch, driver’s license and a small piece of blue paper, folded in half, that read in part, “I live at 35 W. 96th St.,” and bore the letters “DNR.”

The letters are a common abbreviation among medical workers for “do not resuscitate.”

Adelman, an Orthodox Jew from St. Louis, Mo., was remembered by her pals as a devoted friend.

“We have been friends and roommates for so long. We grew up together,” said Aviva Schuman, 24.

“I love her so much. She was the most compassionate person I ever met. She was there for me anytime I needed her. She would have done anything for me. “