Ellen DeGeneres in Crumbling Marriage to Portia de Rossi!

TV host has been in a "slump" lately!

Trouble in paradise?! Ellen DeGeneres and Portia de Rossi have had their fair share of ups and downs over the years, but now, their marriage is allegedly on the decline!

According to Radar Online, the talk show host hasn’t been acting like herself lately — and insiders swear it’s because of her wife!

Click through the gallery above for the shocking details on their marriage woes!