Studio Assignment Portraiture Research Couple Shot

I had in mind a black and white image for the couple shot. I wanted to keep the lighting as simple as possible while also having it super soft. After doing a bit of research I found an image which I really liked and wanted to try and replicate. 

Sharon_Alagna_Photography_Creative_Engagement_Photographer_Los_Angeles

From the looks of things the photographer used a single large softbox facing the couple from the right. It creates some dark shadows but I think in black and white this adds to the feeling of the image. It also falls off quite quickly to the right of the image. Im guessing that the softbox was quite close and on a low output.