You said one day I started my car and it didn't explode
Well now that's the last time I'm letting you watch Casino alone

from Frank Ocean – Acura Integurl Lyrics on Rap Genius

That’s what happens in the opening scene from Casino
http://www.youtube.com/watch?v=ZHzh6eghVFo So now he wont let her watch it alone because of her paranoia.
BTW pay close attention it is very obvious that right before the explosion that a dummy appears in the car in place of Deniro.

To help improve the meaning of these lyrics, visit "Acura Integurl" by Frank Ocean Lyrics and leave a comment on the lyrics box