AZT was the only drug available early on, and what followed was years of bouts of illness, hospitalizations, the loss of his eyesight, his teeth. Addiction recovery. Social Security Disability.
In a healthy relationship of any sort there’s give and take, and you are constantly “refueled” so to speak by the other person giving back to you. But when all you do is give and the other individual either can’t or won’t give back, eventually you’re drawing on an empty tank.