In the past, it seems that my wife and I have gone through this loving/hating cycle many times. More than once, we have had an argument the day after a really great sexual session. Several times she has said, "I don't understand it. It feels like you just want to have sex and then when you get it, you turn all mean and bitchy." Of course I have no idea what she is talking about. I think she is the one who gets moody and sensitive afterwards.
Now that I have found the Cupid's Arrow book it all makes much more sense to me.