Thanks for using health care magic.
I have gone through your history.
His Phobia is attributed to the event happened during his earlier life. he may also have Post Traumatic Stress
Disorder symptoms like severe anxiety while seeing someone nude or night mares etc.
You should take him to qualified psychiatrist
for detailed evaluation and treatment. After assessment, your doctor may prescribe anti depressant
drugs like peroxetine or sertraline or escitalopram along with anti anxiety drugs.
He may also get benefit by counselling and relaxation therapy
like yoga, meditation and breathing exercise
He may also get improvement with Cognitive - Behavior Psychotherapy by expert counselor.
I hope He will be fine and both of you can enjoy your married life soon.