I think its kind of a cross between what stagnate & justalittllost wrote. The 2 lovers aren't supposed to be together or they cheat or whatever, that's the "crime", and they both know each others secret. And what stagnate wrote, about the 'sketch in black & white' being the pictures of them I think is true, but its like a metaphor for them being able to see each other's bad side ('the face you try to hide').
I think its kind of a cross between what stagnate & justalittllost wrote. The 2 lovers aren't supposed to be together or they cheat or whatever, that's the "crime", and they both know each others secret. And what stagnate wrote, about the 'sketch in black & white' being the pictures of them I think is true, but its like a metaphor for them being able to see each other's bad side ('the face you try to hide').