Lyric discussion by Occams_Harmony 

Cover art for Bloody Mary (A Note on Apathy) lyrics by Five for Fighting

I do think this is about prositution, or at least an affair. The Man sleeps with a women, and feels bad about it, but counts on the sun rising each day, to make him better. He swears on each new day that he won't go back and have an affair or something, but each and every time he breaks his promise only to state it again. Futile isn't it?