So Mr. Wonderful has several DUIs and one more will get him a mandatory prison sentance and so, you are saving him from realizing the consequences, and choose to drive him to his dealer's house.
Addiction is progressive. The outcome is prison or death. Sounds to me like you are driving the hearse. What about this strikes you as being normal?
Do you see how you are getting sucked into this? I don't know you but I do know you deserve to treat yourself better than you have been doing.