I want to go to a concert but my dad won't let me.?

So I want to go to this concert because afterwards i was supposed to meet up with one of the guys in the band cause we're dating and i only see him once every few months. My mom died five years ago so I'm stuck asking my dad because my stepmom hates me. But my dads really overprotective of me since my mom died in a car accident. So any suggestions or convincing lies I can tell him to let me go. If you can't think of any suggestions where would you say you are instead of the concert? Cause he doesnt believe im dating someone famous and he just thinks im lying. And he literally never lets me go anywhere. No movie malls libraries projects friends houses anything. Ive never been more than a mile away from home alone because he wont let me leave. HELP!!