Yea, I don't really get it. You should be resistance training while you're losing fat. READ THE STICKIES!
You don't get to pick and choose where you look good and where you don't, unfortunately. That's genetics. So your best option is to diet the fat off and supplement the diet with resistance training so what's left after a good portion of the soft stuff is off is muscle.
The road you're on now is going to a) lead to some serious body image problems down the road and b) leave you chasing the elusive 6 pack at the expense of looking healthy. Unless, that is, you're going for the anorexic look.
All that said, at your age, you should just sign up for football or something and get active. From what I know of sports in mid and high school now is they do a lot of weight training for prep. I definitely wouldn't worry about dieting at your age.