I told you something. It was just for you and you told everybody. So I learned cut out the middle man, make it all for everybody, always. Everybody can’t turn around and tell everybody, everybody already knows, I told them.
After CG told his crush how he felt, she told all the other girls on the bus. This led him to the realization that he should just tell everyone everything because in the end everyone will find out anyways. So he reveals his emotions through something that is accessible to everyone — music.
This might be why Gambino is so brash when it comes to what he says in his lyrics, particularly why he talks about his girls in his songs in the way he does.
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