I've had a relationship past actually. (Which is extremely painful for me today) and he said that I'm too overly attached. But he's wrong, I did things to constrict him because his health is at risk. What are your ideas?

Edited:
We started together happily. When he entered college, He started becoming more clingy to his peers which influenced him to drink that is not allowed for him. We gave him the freedom to do what he wants but he abused it then I stepped forward to compromise the situation by talking to his friends which made him very mad. We've been staying together until our breakup.