Denise Richards' ex Aaron Phypers claims the actress was cheating on him, leading to the fight that prompted him to file for divorce.

Denise Richards and Aaron Phypers divorce isn't going to be amicable. She accused him of dometic violence; he said she's a cheater.

Phypers filed to divorce Richards on July 7, citing “irreconcilable differences” as the reason for their split.