Hi, thank you for using health care magic. I can understand your concern about your husbands sexual health. There are help available in problem with erection. Medicines are helpful in getting tighter erection. There are few surgical techniques also available for the same. Erectile dysfunction(lack of erection) can be due to physical or psychological reason. Mostly with physical cause there is total lack of proper erection and spontaneous morning erection is also absent. Having diabetes chances of physical cause for this problem is high. In this kind of dysfunction drugs are useful. Drugs like sildenafil,tadafil, alprostadil are giving good results. Surgical technique like penile pump is also helpful. For psychological causes use of sensate focus training will help your husband for good erection. Consider consultation with physician or psychiatrist or clinic for sexual health for further management of erectile dysfunction. I hope this will help you. Regards.