I want to be skinny

Really pathetic comments in here to advise a 17 year-old. Nobody should come here for advice. You're 17, and so the body issues will stay with you for many years. If you want to be happy, you've got to be happy with your body. Most people don't have the will power to put down the sugar and candy. Most people want to say they have gland issues, or a slow metabolism. Most don't want to exercise. Most will say there is some other factor involved in their weight gain, something superhuman, something special, something that sets them apart from the rest of us regular humans. Find your path, and don't come here for advice. This website is full of messed up people.

I’m 5’3 and 8.6 stone, it’s just my legs are getting bigger and my lower stomach sometimes looks like it sticks out .

I starve my gf. We are both middle age. I make her weigh herself every day and text me the weight.

He starves her til she feints. No, seriously-- it's all over this site. He can't spell, he can't fence, and since ^ this ^ is all he ever says, he doesn't have a gf either.

^^What do you make her do?^^

I like to make her wear a corset.

Sometimes I'll make her fast for several days. When she tells me how hungry she is and begs for food I'll have her do oral on me.

Food has been a comfort for you. The more you ate the better you felt.Something is bothering you deep inside you will need to bring it to the surface and it needs to be dealt with first.
The second thing would be is what do you think is fat? Is it how much you actually weigh on a scale? Or is it how you actually look like in a mirror?

Please don't hate yourself, not even casually, not even in the abstract. If you don't like the fact that you're gaining, then get into an exercise class, or a spin class, or something you enjoy doing that qualifies as exercise. Or do a yoga or pilates class. Find something you like, because if you like it, you'll continue doing it. But please PLEASE let go of that hate: there's nothing good that will come of it. It won't inspire or motivate you, or make your life better. Please be well.