BG Chap 18 - Happiness in the mode of passion

That happiness which is derived from contact of the senses such as the eye and skin with their objects such as youthful form or touch, and which appears like nectar in the beginning and like poison at the end is in the mode of passion. It is enjoyable in the beginning but quickly turns to poison and causes one to attain hell. Such happiness impresses an increasing number of desires upon our consciousness and thus forces us to take further births and deaths.