"Denzel was always asking me what I was doing but I didn't want to share that information. Nobody knew because I don't like to count my chickens before they hatch so I didn't want to say that I was doing it until I actually finished. What if I said I'm doing this and I didn't finish?" Mark Wahlberg refused to tell Denzel Washington he was busy studying for his high school diploma while they were filming their action movie 2 Guns. The actor graduated this summer (Jun13).