I said you need 3 man I don't need 2

from Ed Sheeran (Ft. Devlin & Wretch 32) – You Need Me, I Don't Need You (Remix) Lyrics on Rap Genius

Meaning

He can take on anyone by himself, whereas the opposition needs backup.

Wretch 32 is suggesting that he could be hitting big things in the charts soon. The song also includes 3 people; Devlin, Ed and Himself. Perhaps suggesting that Wretch doesn’t need anyone else on his album or doing remixes of his tracks?

Also a play on his name “Wretch 32” (read as three-two not thirty two)

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