Its called Infatuation

Infatuation is the state of being completely carried away by unreasoning desire.

All consuming euphoria similar to recreational drug use (addictive chemical reactions in the brain), stupidity (cupidity)

Physical desire, crush, or lust , hormonal activity, addictive chemical reactions in the brain

urgency, intensity, sexual desire, anxiety, high risk choices, reckless abandonment of what was once valued

reckless commitment to satisfy one's all consuming lust

being controlled by brain chemistry; loss of ability to make rational evaluations of what is true, valuable and worthy of pursuit (similar to Meth)

takes off fast and furious like a spark in dry grass burns out quickly and leaves emptiness and destruction in a committed relationship may last 1.5 years, 3 if you are in the military