Sweet agony

"although he had alluded in many a poem to the "happy pain" or even the "sweet agony" of love, he had not understood that the agony could be worse than any other sort of agony - worse than any actual pain of the limbs or organs, worse even than the way his head felt after a night out drinking, which he has previously thought could not be outdone for misery. And there was no way to separate a wounded heart from the body it tormented"