When depression's symptoms are at their worst, they may cause your partner to think you no longer love him. The problem isn't a lack of love, however, but rather has to do with your neurotransmitters being out of whack. Remember them? They're sex communication central, and if they aren't speaking to each other — if these chemicals are not working properly — desire is dead in the water.

So what do you feel? Not much. And this low level of libido is what is causing your partner to think that something is wrong with the relationship. Your partner is right, of course, but the problem, in a nutshell, is depression. You've only to look to the symptoms of depression to see how they're to blame for your loss of libido.

As you read earlier, anhedonia is the loss of interest in things that used to prime your pump. Perhaps you were an avid cyclist, boat enthusiast, motorcycle nut, or armchair football fanatic. Now you just can't seem to work up any interest, let alone enthusiasm, for a whole host of activities that you previously took pleasure in. Unfortunately, for both you and your partner, sex can be one of those activities. Anhedonia is one of the symptoms of depression.