Can anyone help me pleaseee?

Okay so i need help finding a movie. I wanna say i saw it on lifetime but it may be one of the channels similar to it

The man and woman were married but had some issues and the woman met this french photographer and they started seeing each other, well the photographer guy disappeared and it turns out the husband attempted to remove him from the picture (had a female accomplice i wanna say it was an assistant or secretary, maybe a doctor/therapist?) and tried to convince his wife she was crazy and that the photographer was abusive and left her

and someone near the end of the movie was being buried alive (i think the wife) and the husband was part of it

in the movie that mentioned a french musuem i believe it was and that’s how they remembered each other

the photographer guy was blond btw if that helps

Sorry this post is super messy i cant remember a whole lot of details but i remember going back to watch it on tv a few years back but my mom accidentally deleted off the DVR but it was by far one of the best movies ive ever seen