Sadmabel, of course you love your son. Watch his actions , not his words and definitely insure that he seeks counseling. I am so sorry to hear that you suffered a tragic loss in your family.
Your story is mine just two short years ago when my son first got addicted to heroin. I hope and pray he embraces this chance for help that you are giving him. Please keep reading and keep seeking guidance. Heroin is a terrible terrible drug that changes our children's brains,emotions and thoughts.
Hugs and I feel your pain, I really do...
Teresa