Though this arena rocker is a personal, relationship-based song, all the metaphors Matt Bellamy uses relate to things that he read about concerning the second law of thermodynamics. The law states that because energy is naturally expended and consumed and no new energy produced, unlimited growth is unsustainable. Bellamy told Q magazine that on this song he is, "talking about cooling down, fighting for love, all that sort of stuff."
"I Just Wanna Love U (Give It 2 Me) " borrows four bars from Notorious B.I.G's "The World Is Filled." Jay-Z and Biggie Smalls attended Westinghouse Career and Technical Education High School in Brooklyn, New York at the same time.