More Secrets! Javi Marroquin Writing Scathing Tell-All On Kailyn's 'Cheating & Lies'

Kailyn Lowry admitted her pregnancy bombshell after RadarOnline.com broke the story – but her ex-husband Javi Marroquin claims she's hiding more secrets! The Teen Mom 2 dad exclusively revealed what he'll spill in his scathing tell-all book.

"Fans can expect a story about a man who thought he figured out life," Marroquin told RadarOnline.com. "Lies and cheating were swept beneath his nose for a long time!"

The tell-all, titled Heartlessly Hustled after Lowry's Hustle & Heart, will also reveal to fans "what it's like now to raise a smart and energetic little boy alone."

In August, Marroquin, 24, exclusively told RadarOnline.com about his upcoming book.

"It's actually a response to Kail's new book coming out," he said. "Except mine will be the truth and what she actually did that ended the marriage."

But Marroquin put the project on hold in October when he admitted to being on good terms with his ex-wife.

"The only reason I was coming out with that book was to make sure my story was out," he said. "But Kail and me are doing really well so I guess we'll see. I'm willing to drop all of this. At the end of the day, I was mad and angry when I got home. Now I'm in a good place and I'm willing to let everything go."

But the truce is off, as Marroquin is back to feuding with Lowry. The 24-year-old confirmed her pregnancy with her third baby daddy only months after divorcing Marroquin because she didn't want to have another child.

The betrayal forced Marroquin to blast his ex over social media when the announcement was made.

"Take a shot for me," he asked fans, adding of son Lincoln, 3, with Lowry, "My son, follow your dreams. I'll pick up the pieces for you. Love, your daddy."