Drug addiction does not end when one reaches an elderly age. Today, I was thinking about a former lover, who continues to be a drug addict. Due to my ongoing therapy related to a CSA, I now realize that I was an enabler of a drug addict lover. Healing myself through my mental health issues at this elderly age, I have to limit my daily stressors for my healing growth. I feel shameful that my infatuation neglected me to see how I was enabling a drug addict. I realize now I was emotionally being abused, each time my lover got "high" on drugs.
A drug addict is only responsible for his own actions. You have recognized your own involvement and seem to be taking the necessary path with therapy for your own well being and rising above the shame. Many people deal with addicted loved ones. It seems more common than people think. Your not alone in what you went through.
If he was over 18 he was making his own life choices. You shouldn’t assume responsibility for his actions or your influence on his life.