Was it the horrifying pictures of her fiancé recklessly driving with their baby son on his lap that ended the relationship?

Victoria’s Secret model Alessandra Ambrosio and her fiancé Jamie Mazur have called a temporary halt to the relationship and are having a “trial separation,” according to a new report.

“They’ve been living apart," an insider told Life & Style magazine , saying that their wedding is off.

"They’re still on friendly terms because of the kids and spend time together, but for now, they are separated and there will be no wedding."

As Breaking Celebrity News previously reported, Mazur was recently spotted driving on a Los Angeles street with their son Noah illegally perched in his lap in the driver’s seat.

The pair have two children together, Noah and older daughter, Anja, and have been engaged since 2008 but their last public appearance was strained for the couple.