Film where his new wife has to please his brothers

I think I can help you with that!

The film that comes to mind is "The Stepfather" (1987) directed by Joseph Ruben. The story revolves around a widowed mother, Susan (Terry Pollio), who marries a charming and charismatic man, Terry (Stepfather, played by Terry O'Quinn). However, things take a dark turn when Terry's brothers, Mike (Casey Siemaszko) and Jeff (Robert Lesser), arrive at the family's new home, and it becomes clear that they have a disturbing and unhealthy dynamic with Terry.

As the story unfolds, it becomes apparent that Terry's brothers have a twisted fascination with Susan, and they expect her to cater to their every whim. The film explores themes of psychological manipulation, gaslighting, and the blurring of boundaries, making it a chilling and unsettling watch.

Is this the film you were thinking of, or would you like me to suggest more options?