There are two films opening this week that feature a relatively young male character who finds himself in an awful situation, suffering profound loss, and then having to figure out how to move on from that experience. In “The Lucky One,” Zac Efron plays a marine who, during three combat tours, witnesses multiple deaths and injuries to those close to him, but manages to come through unscathed. At least physically – he’s certainly not emotionally and psychologically unscathed, jumping at sudden sounds and reacting adversely to being woken suddenly by his young nephews. He’s also a bit of a self-reliant loner, now that he’s away from the camaraderie of the Corps and when he decides to travel