"The grenades explode, / one by one, slowly, then at once. / No red stains the ground / yet there is an aching, lonely blue following time / and upon the tombstones they engrave." Hazel and Augustus are just two battling grenades, waiting to explode. The world is their battlefield, and time is not kind to either of them, for all the time in the world is not enough. Hazel/Gus.