Don't confuse fructose (sugar IN fruit) with the crap they add to practically everything - High Fructose Corn Syrup (HFCS).
Also, there are differences between sugars. When we eat sucrose (table sugar), our bodies quickly break it down into roughly equal parts of glucose and fructose. Glucose is the sugar our bodies use for physical and mental energy. When our bodies sense an increase of glucose in the blood, it immediately directs the pancreas to push insulin into the blood stream. With the insulin, the body is able to burn the glucose as energy. If there's too much glucose in the blood to be used as energy, the glucose can be changed to glycogen, the body's short term storage energy supply. And if the glycogen pool is already full, the body will turn it into long term storage in the form of fat. Your body can't use fructose without converting it into glucose in the liver. Actually, most of the time, however, unless
your body needs to immediately increase it's blood sugar level, the liver changes fructose into glycogen first. This is why people think fruit = fat.