Sex with people you hate

The concept is pretty steamy and also pretty strange. Isn't sex supposed to be a manifestation of love, and isn't love the exact opposite of hate?

No, it's not. In one episode of "Desperate Housewives," and yes, I'm aware I'm about to quote "Desperate Housewives," said to her malicious son, "The opposite of love is not hate, it's indifference."

This makes a lot of sense. Sex with people you're indifferent to is entirely unsexy. Hate and love aren't opposite because they're both emotionally charged, and what is sex if not some crazy mix of emotional and physical?

I thought a Google search was in order. I found this book, "How Emotions Work" by Jack Katz. He says, "Only through sex can human beings focus all of their energies in using a small part of themselves to physically attack each other with unparalleled intimacy and unrestrained force. . ."

According to Katz, sex and hate are linked because hate is inherently violent, love is not. And sex, well, it can be.