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' divorce seems to be heading down a long, bitter road as Aaron Phypers has slammed her with some weighty allegations.

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

Denise Richards' estranged partner is singing a different tune about what went down that led to the demise of their marriage.

Denise Richards' estranged husband is revealing what ignited their explosive July 4 fight, and subsequent divorce -- he claims he caught her cheating, and has text messages to back that up.