Portia de Rossi has finally had enough. After eight years of her wife Ellen DeGeneres’ controlling behavior, the pair have been “arguing more than ever,” an insider tells In Touch — and are finally heading for a divorce.

And it’s going to be messy.

EXCLUSIVE: Portia and Ellen are “Fighting Daily”

“They’ve had heated debates about Ellen’s controlling behavior and her anger issues,” the source says. “They fight over Ellen’s drinking, her lavish spending — mostly on real estate — plus her busy work schedule and how she doesn’t want Portia to work.”

ellen degeneres portia de rossi getty

While they try desperately to maintain the facade of a happy marriage, divorce is “imminent” according to the insider — and it’s not going to be easy due to Ellen’s $345 million fortune.

“A good chunk of Ellen’s fortune is at stake,” the insider adds. “This could be one of Hollywood’s most expensive, ugliest and dirtiest divorces ever.”

For more on this exclusive story, pick up the new issue of In Touch, on newsstands now!

Have a tip? Send it to us! Email In Touch at contact@intouchweekly.com.