Dying from porn addiction.

Warning: Not for the faint hearted. Hi guys. I was in a long distance relationship and the only way i could stay faithful was to watch porn and then "help myself". I did this for 2 years and now i'm suffering from its side effects. Does anyone know how i can get over this disease. At one time i had a thousand movies. I destroyed them all trying to get over it but then i relapsed and ended up buying more which was more expensive in the long run. At present i've got 2000 movies. I'm afraid of destroying them since experience has taught me. Besides there's the pain of downloading movies too. It's as bad as a coke addiction and i think the latter's better because this is destroying my life. My attention span is tapering, confidence diminishing, i'm gaining weight, shying away from women, my mental faculties are depreciating and every time i face a crisis i resort to it. Does anyone have experience in this as there is no specialist in my vicinity. To make it worse my new girlfriend is a virgin and i'd never ask her for sex. I don't want to be the guy who took it from her then maybe broke up with her. She deserves that in a marriage setting. I also don't want to cheat on her. I get incredibly horny and because i'm lonely i get into my fantasy world and relieve myself. I'm a junkie and i'm always sleepy and have recurring headaches. How do i put this animal on a leash. I think i'm a sex addict.