So much for letting bygones be bygones. Lauren Conrad has started a series of vicious rumors about arch-enemies Spencer Pratt and Heidi Montag in hopes of convincing MTV bosses to dump the kissing couple from her hit reality series The Hills.

“She’s been spreading rumors, telling friends that Spencer has been cheating on Heidi,” a Star Magazine snitch says.

Tabloid insiders claim Lauren also routinely makes fun of Heidi and Spencer’s devout Christian faith, with barbs like “God told Spencer to buy a BMW” and “God told Heidi to get fake breasts.”

“LC continues to push MTV to get rid of them. She will stop at nothing.”