Thanks to lyrics slayers I've found that Suki Lie in means of the song Suki Lie by ARATASHII GAKKO! is a portrayal of the inner conflict and emotional turmoil that comes with a relationship marred by lies and infidelity. The oscillation between love and hate, the desire for retribution, and the struggle with one's own complicity in the deceit are themes that resonate throughout the song.
"That girl was suuch a Suki Lie"