Hi Gabriela,
So sorry to read your post about your son relapsing after three years. That must be so difficult for you to manage.
If you would like some support for yourself and your partner, please contact us at Icarus Trust. We are a charity that provides support for people having to cope with a family member’s addiction. If you contact us, I can put you in touch with one of our trained and experienced people who you could talk with. They may be able to help you see what to do next and can give you information on what other help is available.
You can contact Icarus Trust on help@icarustrust.org or visit our website http://www.icarustrust.org
I hope that this will help. Good luck.