Jeanine Pepler, a publicist known for representing authors Jay McInerney and Candace Bushnell, died by suicide Sunday night.

Pepler, 50, was said to have hung herself in her Sag Harbor, Long Island, home and was discovered by her boyfriend, Steve Miller.

'He is just devastated, as are we all,' friends told Page Six. 'She seemed to be doing great. They had a lot of plans for the future.'

Jeanine Pepler, 50, was said to have hung herself in her Sag Harbor, Long Island, home and was discovered by her boyfriend, Steve Miller.

Raised in Cape Town, South Africa, Pepler moved to New York in 1996.

She worked in public relations with Tina Brown, Michael Eisner, Julian Schnabel and Julie Taymor.

Pepler had moved to Sag Harbor recently and was working on a boutique agency called AKA Life.

Pepler represented authors Candace Bushnell and Jay McInerney

Her website bio stated: 'Her guilty pleasures include golf, white Burgundy, Betty's Greek wraps and her daily early morning romp in the dog run with Violet, her French bulldog.'

In 2005, Pepler and McInerney had an amicable split from their six year intimate relationship

In 2005, Pepler and McInerney had an amicable split from their six year relationship.

At the time of the split, Pepler had claimed that 'we will still love and care about each other even though we're not together anymore.'

The two continued to maintain a friendship, even after McInerney married Anne Hearst in 2006.

McInerney's 9/11 novel has a dedication that reads: 'For Jeanine: Who rescued me that day and many days thereafter.'

Back in 2004, Pepler had thyroid cancer but was said to have fully recovered from that/

NY State Police stated that her death is 'an active, ongoing investigation.'

For confidential help, call the National Suicide Prevention Lifeline at 1-800-273-8255 or click here.