Spring bursts forth with vibrant color, intoxicatingly sweet floral scents and sex.  That’s right, relations.  While monogamy in the rest of the animal kingdom is more of a myth, human pair-bonding gives the reward system a long-term buzz of activity and contributes to both physical and mental health. Oxytocin, the hormone produced when engaging in hugging, kissing and intercourse reduces jealousy and increases partner attractiveness. How unfortunate would it be if a product existed that could disturb this natural rhythm: altering the level of attraction and diminishing sexual functioning. There is - and almost 10 million women in the US are using it: hormonal contraception.