I'd say give it a shot. Show him that you're responsible about it, and that it doesn't affect your job or your classes..

But, if you're young, I wouldn't risk it. If you're still living at home or whatever, they're likely to give you that "I don't want you to lose focus, bright future, interference" bullshit. I still haven't told my parents, and they smoke more than I do.

And your dad's probably ALWAYS gonna take money from you if you let him. I remember my parents doing that when I was in high school.