This song is about a guy who hangs himself because of what his girlfriend or whatever did and she finds him and cuts him down and is franticly saying sorry but he can't respond because he is dead "I'm hearing what you say but I just cant makea sound". This is the first verse. "It's to late to apologize" literally means she was too late, he killed himself because of her actions. The second verse is interesting and a little bit trickier to crack. It's him talking about what he'd do for her and he hears her say sorry and she's "the angel heaven let me think was you" but its too late for that he's dead.