I’m sorry about your relapse.
Do you have any drugs left? Trow them out. Can you delete all your dealers numbers on your phone to avoid a new relapse. Quiting is hard, how hard do you want it?
Maybe add some extra help like going to an NA meeting? Maybe online if in real life isn’t possible? You find those here:Resources for our recovery
And about your partner, he needs to vent too. He is in distress about your using. I think he needs some space too if you understand what I mean 
You are not the worse person in the world. There are many like you and I was one as well. I had my share of relapses and you can turn that around by really want this to work and add in all the help you can get 
You can do it!
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