gotta love the lyrics
Casino? Twins? LOVE?It's basically about the inner struggle the girl has. She either loves the boy for herself, or for him, and in the end decides that it's best to not choose between the two, but be both. Once her choice is made she is allowed to leave the 'casino' setting representing the gambling aspect of love, and realizes the boy went through the same experience because the two male versions of "I" and "U" are shown behind his door. They both realized their feelings in the end.
О.оBoth were depressed but the boy hid it with smiles but the girl was open with it. She leaned on him, as she broke apart deep down she knew he felt the same but ignored it and focused on her own problems. In the end he commits suicide, so she looks back on memories 'flashbacks.' It is constantly chainging times, the broadcast being when they report his suicide and she cries. Since in those they only show the person happy, and she knows it is a lie. She just wants to go back when that 'lie' was.