When you could have simply kept it on the down low
Fans of Abel when he was less well-known spread his music (particularly on Tumblr), whilst saying that they did not want him to become mainstream. But they inadvertently made him mainstream and he isn’t coping well with the new attention.
Similarly, the girl he is talking about went and told everyone about their relationship, when they could have just kept it a secret.
Also a possible reference to R. Kelly’s song “Down Low (Nobody Has To Know)”
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