Seemingly half a day late, but here's one. The photographing is seemingly already well explained, but the image is very different. I selected the fake light to come from the right. Thats only an opinion.
The man was selected by the quick selection tool and the original background was deleted. 2 copies was made, one was left for spare. Added a white background layer.
At first the exposure was added by the curves tool until the face was at the edge of overexposing. The back got big white areas, but they are not shown here.
EDIT: The saturation was reduced because increasing the exposure by the curves tool increased it too much.
Moved another copy (=normal) over the overexposed one. Masked off, where the bright one was wanted to ve visible. Masking = painting black to the layer mask.
Finally added new adjustment layer "darkening". It's Curves layer. Just before making that layer the man was selected to create the layer mask, too.
Adjusted the curve for good nearly black back. Painted black to the layer mask to reveal the bright areas. Painted also a little white to the left to create a fuzzy shadow.