Why cant i stop gay porn

Hey!! I have just got a girlfriend, i love her very much but every time im alone i go on grindr and jerk off. She is great and satisfy me completely but it’s like I can’t stop. I never look at other men when im not horny but whenever im alone and horny i just cant stop myself. Any tips?

Edit: i am quite dominant with my girl in bed, but i become completely different when i go on grindr