6lack is trying to tell this girl, most likely his crush that he’s good friends with, that she’s making a mistake in going for someone of her interest when he is a better fit. Throughout the song, he drops hints in exactly how she’s making a mistake, how he’s better and the main message coming from him of how “it’s been a while” since this girl last spent time with her when she’s busy with her person of interest.

There is a bit of a connection with this and Frank Ocean’s lyric “I’m not him but I mean something to you” in Nikes.