This prodecure may be dangerous, especially if you live with my dad. If you plain as day just confront him saying what you did, you might get grounded. Ask him, "I was playing your find my iphone, and saw you were at the casino." He might say he was meeting his friend there. If he does, tell him, you stayed there for an awful long time. You couldnt of just given him money. Did you gamble? If hes hiding this, and says no, confront your mom withthe situation hwhen your dad is out. I will try my best to ad on and help you with this situation. And by the way,, if hes wasting money gambling, it is very wrong.