Sorry you are having such a tough time. I would probably suggest a therapist. I would do my reaserch and find one that works with gays and sexual issues. It is good that you have stopped viewing internet porn of zoofilia. Because that is one of the things that your fetish would feed on. You are doing the right things by avoiding the internet and fantasy. You will recover if you work at it, but it will take time and work to get past this. Best wishes.