Studio stuff... obviously. Simple two light set-up. Soft box as main camera left. Brolly box/octo-box (smallish) slightly camera right as fill. White reflector just off the RH edge of the image, waist high and angle upwards into their faces.
Like the lighting!
The best for me is the guy solo. I like the tones (B&W with the colour of his shirt). Background fits very nice.
IMHO the Rembrand light on the female is a tad too dramatic. Too dark on the camera right side. This portion of the photo is where you did a great job with the man (separate dark face throught light background).
I very much like the emotion on the last photo! Great job. Only thing (for me ...) is that the skintones fight al lot with each other.
You have captured some interesting facial expressions. I also like the composition of all three photos. The third one appears unsharp (especially on the man), whereas the first two are sharp. I do have some mixed feelings about the emotion/feel of image #3. He looks at the you/the viewer while she is gazing off... Doesn't quite work for me.
I like the lighting and B&W conversion of #1. In combination with the models smile and shape of her hair, the image has something "little devilish" about it... which I like... something naughty... but I don't know if that was intentional and if the lady likes that herself You could argue that the left side is a bit too dark. But that is a matter of taste. Some people like dark shadows, others are less fond about them. And maybe the shadows were deepened as a result of the B&W conversion. Anyway, I like it the way it is. But out of curiosity, I would like to see a version with more open shadows on the left side... just for comparison
I also like the lighting on #2 and #3. The background in #2 matches his skin well.
Thanks Leeuwtje, Daan. The direction of her gaze bothers me a tad also. But I like the display of affection... something that seems a bit rare for them. I tend to like "dramatic" lighting, do a lot of stuff with one light only. That probably explains the B&W coversion having a healthy bump of the blacks and contrast in RAW... a personal taste thing.
I like the dramatic look on Debbie, especially the vignetting you did between her hair and the top of the frame. I also know that people tend not to like the drama (echoed in Leeuwtje's post); when I do Rembrandt light I have to restrain myself if the project is for someone else, but when it's for me I tend to go the direction you took.
I also agree with the comments on Debbie's gaze in #3; I tend to prefer subjects in posed pictures to be looking at the camera, but that's just me.