No matter what you say or what you do
When I'm alone, I'd rather be with you
Fuck these other niggas
I'll be right by your side 'til 3005, hold up
He doesn’t care what the girl says about him or what she does (for example mess around with other dudes), he’ll still always rather be with her than without. He’ll be right by her side until “3005”, in other words, until he dies.
As Kanye noted in “Blame Game”:
Gambino himself also stated that the real meaning of the hook could be interpreted as however the listener wants; it’s more of an “existentialist” type of song and could refer to a girl, money, God, or whatever.
For Gambino, he’s scared of the future because he doesn’t want to be alone. In an interview, he brings up a story of how he was afraid of a dog that lived in his neighborhood as a kid, but when he was with his little sister, he wasn’t afraid of the dog anymore because he knew he had to protect her. Similarly here, as long as he’s not alone, he won’t be as afraid of the future (or the year 3005) as he would’ve been.
Made more evident by the official music video, Gambino’s usage of the phrase “Hol' up” is intentional (hole up, as in flee from society due to his fears and anxieties).
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