Sandra Bullock's ex says he s probably "the most-hated man in America now"

Credit: Gilbert Flores/Celebrity Photo; Jeffrey Mayer/WireImage

Jesse James breaks down in tears as he finally speaks publicly about the demise of his marriage to Sandra Bullock.

“I took a pretty amazing life and marriage … and threw it away,” James says in a promo clip of his interview with ABC News’ Nightline, scheduled to air Tuesday night.

James, 41, admits to cheating on Bullock and says his actions – including allegations of affairs with multiple women – have made him “The most hated man in the world. At one point, he s so overcome by emotion, he walks away from the interview.

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Since the couple s split, James has spent time in a rehab program and has otherwise maintained a normal schedule at his Los Angeles-area home, where he’s often been seen driving his kids to school.

But James is looking to make a change. A source tells PEOPLE that James has put the house he shared with Bullock up for sale. The motorcycle mogul is eyeing Austin, Texas, as a place to spend more time, according to another source. Bullock has long called Austin a second home.

Meanwhile, Bullock has been spending quality time with her new son, Louis, including a Mother s Day celebration in New Orleans last week.

Part of the interview with James will air on Good Morning America Tuesday and then as a special edition of Nightline that same evening.