Addiction is something that a person does something so often that they can no longer live without it…it has become an addiction.
Addiction can be substances like alcohol, cocaine, other hard drugs, prescription medications, caffeine, nicotine, etc.
Addiction can also be a process like sex issues, work, food, money, internet, and other process issues.
Compulsive attachments may also be an addiction. These include impression management, codependency, trauma bonding, issues with overly giving, and staying with troubled people.
Feelings can also be addictive. These feelings include fear, rage, intensity, etc.
It may be that even though you are living with an addict, you may have addiction issues yourself.