I think it's sort of like he's at the end of his relationship but still holding onto hope. "Can't cross the line" like he can't end it but wants to so he feels alone. "Crystal or bamboo" the contrast between what the relationship looks from the outside to what it really is. And like the other person said "SOS in bel air" trouble in paradise- - people think it looks good but it's far from good.
I think it's sort of like he's at the end of his relationship but still holding onto hope. "Can't cross the line" like he can't end it but wants to so he feels alone. "Crystal or bamboo" the contrast between what the relationship looks from the outside to what it really is. And like the other person said "SOS in bel air" trouble in paradise- - people think it looks good but it's far from good.