Hello,
It can be due to scabies. Scabies is an infestation of the skin with the Sarcoptes scabiei mite. It is characterized by intense itching, usually at night and by small insect-type bites lesions on the skin. Diagnosis of scabies is made by scraping the skin and viewing the material under a microscope to see the characteristic mite or eggs.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
Are you really itching because you itch or because you see him itching? If it is just him, he may be having an allergic reaction to something. If it is truly both of you itching, you may want to consider bed bugs, scabies or some other spreadable contagious issue. I would highly recommend that both of you see a doctor.