I remember watching a movie on tv in Australia in the 1990’s.
It started with a lovely blonde wife sitting at a mirror brushing her hair.
Her husband cheats/fools around on her early on in the movie.
I always thought it was called Leola but I never seem to find it when I try searching for it.
I seem to remember there’s a scene with Jodie Foster brushing her hair like that in “Mesmerized.” Her husband is older and abusive. It’s not a very good movie, in my opinion, and I haven’t seen it for a long time, so while i don’t remember him cheating on her specifically, it would certainly be in his character to do so.
https://www.imdb.com/title/tt0091513/?ref_=nm_flmg_act_33