I am sorry for the circumstances that brought you here. I agree with what everyone else has said. It's all about the consequences.
Tolerance builds as addiction persists, meaning an addict will need more and more and the habit becomes more costly. This is usually when an addict begins to con and steal from friends and family, the people who care most about them.
Give your friend a wide berth and the dignity to realize the consequences sooner rather than later. Protect your heart, your stuff and your pocketbook.