It's wrong to hide relationships from your spouse.
In order to save money, Ben will be sharing a room with his female coworker Annie.
Ben needs to tell his wife Maggie about the trip.
Ben tells Maggie that he will be sharing a room with Annie, assuring Maggie that their relationship is strictly platonic.
Ben tells Maggie that he's traveling alone.
Maggie's trust in Ben increases.
Maggie finds out about Annie, and she begins believing that Ben is cheating on her with Annie.