NEW YORK (CNN) -- The one-time wife of former New Jersey Gov. James McGreevey is writing a memoir about her life with her ex-husband. "The Silent Partner" is expected to be published by Hyperion Books in May, according to a press release.

In August 2004, Dina Matos McGreevey stood silently behind her husband while he admitted to having an affair with a male staffer while in office. He resigned three months later. Ms. McGreevey has been out of the public eye since that admission but feels that the time has now come for her to share her side of the story.

In a statement issued Wednesday through Hyperion, McGreevey writes, "two years have passed and still I am the subject of much speculation as to the nature of my relationship with my husband. Enough is enough."

Hyperion would not disclose the financial details of the deal.

Since separating from her husband in 2005, Ms. McGreevey has been living with her daughter, now 5, in New Jersey. She is the executive director of the Columbus Foundation in Newark.

Former Gov. McGreevey's own book on the scandal, "The Confession," was published by Harper-Collins last year and reached No. 3 on the New York Times bestseller list.