We think that it is only women who are moody when it comes to matters of sex. Well no even men can play a spoilsport at times. While we love to believe that the raging testosterone makes them want more sex but there can be times when they too can feel the blues. There could be a lot of reasons why a man might want to avoid having sex with his partner. Here are a few of them: Performance anxiety: Many men secretly suffer from performance anxiety and prefer to keep it to themselves. They are scared to even talk