I Broke up with my boyfriend and This was his response..l

Last night i broke up with my boyfriend due to his constant drug abuse. He had been clean for almost 2 years lately but last few months he’s been relapsing. No matter how much i worked with him to get him to quit, nothing was working. I just couldn’t bare to see him kill him self every day. His personality was changing. We would go on dates and you could clearly see he was high off something. There was times where he couldn’t even speak complete sentences or have a conversation with me. It was so upsetting to watch. It was affecting me mentally too. So i deciding to break up with him. I don’t know if what i did was the right thing because now it seems like if i gave up on him or me leaving was to going to trigger him to overdose. His reply surprised me, he couldn’t even type correctly, and i never knew he would say such thing after everything i have been through with him. My heart hurts so