From the album this girl wants everything
This is a song about a man who has convinced himself his girlfriend is insatiable when really he is the one who needs her to need him. He calls her demanding while simultaneously declaring no one else can provide for her. The contradiction is the whole point. He is not describing her greed. He is describing his own trap.
They say love don't cost a thing, but it cost me everything / So I stand on what I say
He tries to separate emotional love from material provision while listing a house, a plane, a wedding ring as proof of love. The line contradicts itself on purpose. He knows he is conflating the two but cannot stop.
You got infinite ways to fix all your problems, baby / But always knew exactly how to get what you want from a nigga
He claims she has options, which undercuts his entire premise that she is dependent on him. If she can get what she wants from anyone, then his resentment about being her only provider makes no sense. He has not noticed this yet.
And for an exchange, this girl won't give me nothing, no
The word 'exchange' turns love into a transaction he believes he is losing. But the song never shows her actually refusing him anything or saying she wants more. We only hear his interpretation of her wanting, never her voice.
I don't want no one else providing for you / And I'ma show you
Right after spending two verses complaining she expects everything from him, he declares he wants to be her sole provider and will prove it. This is not her contradiction. It is his. He resents the role he refuses to give up.
The song title names her as the problem, but the lyrics reveal a man who has built an entire identity around providing for someone and now resents her for letting him. The real want is his. He wants to be needed badly enough that he has mistaken his own hunger for hers.