Lachey explained in a recent interview that Simpson was a two-timer while they were together and refused to save their marriage.

Jessica is horrified that Nick would betray her so deeply! Simpson has sworn off Lachey after this public humiliation.

A friend of Simpson's reveals: "Jessica is cutting ties with Nick. She believes he's poisonous."

Nick has ruined her reputation--she has lost fans because of his outrageous executions! She can't walk down the street without getting disapproving looks-- like she's a slut! She thought Nick and her were getting past all the blame but no, just the opposite. But from now on, she is no more "Miss Nice Girl"! "
Source: postchronicle