Fresh Every Hour by John Peter Toohey

A most prepossessing young person whose parents had inflicted upon her the name of Lolita Murphy was directly responsible for the alarming symptoms already hinted at. From the precise moment that Lolita came within his ken Jimmy ceased to be a rational being in full control of his faculties and his heart, in sympathetic accord with the agitated condition of its owner, began to put on an antic disposition and indulged in curious palpitations of a most annoying nature on the slightest pretext. The usual provocation at first was the sight of Lolita herself, but after a day or two even the thought of her produced a cardiac ratiplan that would have done credit to the trap drummer of a jazz band.