Marje had no idea that her husband was leading a double life with another woman.double lifeˌdouble ˈlife noun [countable] 
Marje had no idea that her husband was leading a double life with another woman.
EXAMPLES FROM THE CORPUS
- In Paris, the quintessential city of freedom and discretion, he could lead a double life.
- It was very much a sort of double life.
- She wondered how Beatrix had reacted to its revelation of the double life Maurice was leading.
- They lead a double life, on the surface passive, even servile, but inside they suffer.
- Who would have thought that he was leading a double life?
COLLOCATIONS FROM THE ENTRY Marje had no idea that her husband was leading a double life with another woman.
if someone lives a double life, they deceive people by having two separate homes, families, or sets of activities, one of which they keep secretlead/live a double life Marje had no idea that her husband was leading a double life with another woman. Marje had no idea that her husband was leading a double life with another woman.