Fear can interrupt processes in our brains that allow us to regulate emotions, read non-verbal cues and other information presented to us, reflect before acting, and act ethically. This impacts our thinking and decision-making in negative ways, leaving us susceptible to intense emotions and impulsive reactions
That it is Hard being in love, espically when your love leaves you. He is implieing that when your love leaves you, nothing else go's on. There is nothing in this world for you anymore, and you can not even function.
