Said you should get a rubix cube over your heart
But you say I’ve already figured it out
Already figured out the love

from Frank Ocean – Blasted Lyrics on Rap Genius

Meaning

He told her to get a rubix cube (type of puzzle game) over her heart because it would imply that her heart was something worth solving, but she explains that he has already figured out the “rubix cube” that is her heart; he has “already figured out the love”

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