They’ve been having some serious marital problems, and now Heidi Montag and Spencer Pratt have accused each other of having extramarital affairs.

The “Hills” costars/real-life spouses are reaching a whole new depth of destruction, with Heidi going so far as to hire a private investigator to tail her hubby.

They’ve always been thirsty for fame and seem willing to do whatever it takes, but it sounds like Heidi and Spencer Pratt's gig may be up.

According to Radar Online, friends of “The Hills” couple are tiring of their act and actively distancing themselves from the duo.

Earlier this week they announced that they were splitting up, but now Heidi Montag and Spencer Pratt’s split is being deemed as nothing more than a publicity stunt.

According to a report from Us magazine, the “Hills” stars are still very much together, and only leaked the split rumors as a way of staying in the news.