Lamar Odom’s ex/babaymama, Liza Morales, split with Lamar in 2008. She tells the NY Daily News that she’s talking to literary agents about repping a roman à clef she’s written that depicts what it’s really like to be in a relationship with a star athlete.

“It shows the lifestyle from the inside,” says Morales, who turns 32 Monday. “Since our society is obsessed with celebrity, the book gives a behind-the-scenes glimpse of the real reality.”

Morales is keeping the book’s title under wraps, but she says the athlete in her novel is a professional football player, not an NBA star. That said, a friend who read the manuscript tells us insiders will recognize Odom in the character.

“You’ll see a lot of tidbits that make you go, ‘Hmm,’”says the source. But Morales says she wrote the book with a higher purpose in mind than payback. “My intent is not to bash my ex or any pro athlete,”she says. “I want to show women that you can rise up from a certain situation.”

Morales began dating Lamar in 1996, when both attended Christ the King High School in Queens. They became engaged in 2000 but never married. After they officially broke in 2008, Odom married Kardashian in 2009, barely a month after meeting her.

Morales says she “stayed too long” with Odom because she came from a “broken home” and wanted to “break the cycle” for her kids. The death of their 7-month-old son Jayden from sudden infant death syndrome in 2006 was “a real wake-up call,” she adds, because Odom essentially left her alone to deal with her grief and their surviving children, Destiny, 12, and Lamar Jr., 9.

Odom does provide financial support for his kids, but the college-educated Morales says she doesn’t want to just sit around collecting his checks.

Morales could have tried reality TV when the producers of VH1′s “Basketball Wives” asked her to be on an L.A. spinoff of the popular show, but she says “it just wasn’t for me.”

My thoughts on this book is, she’s writing a tell-all book because she maybe a little upset at Lamar….since he married Khloe in 30 days. Plus he’s just cutting a check, and not spending time with his kids. What do you think Gumbumpers?