First time my dog took advantage of me

I am a 27 year old male slim and 6foot.Happened to be a later evening in the fall I was walking upstairs( I live alone) I slipped on the bottom step and hit my shin so I sat on the floor for a few mins when my dog Cane corso 4 year old male came over of course he wanted to give kisses but this time he tried to jump on me I never thought anything of it after telling him get down I spun around to get up and he jumped again this time his paw hooked my pants I was wearing adidas nylon track pants they pulled down making me trip by the time j got on my hand and knees to get up he was on me again this time I was fighting him to get off because he’s over 100pounds and it was weird because my pants got pulled down and I didn’t have underwear on anyways I couldn’t get him off me I was trying to get out from under him when I felt something touch my ass cheek in panic I pushed back to try and get around his front paw but he gripped my chest and his cock bumped my asshole in more panic I tried to lay flat witch pulled him in and his cock rammed into my asshole penetrating my ass it hurt and I was absolutely terrified and didn’t know what to do but I didn’t have time to think because he all of a sudden started humping hard and I felt his hole cock slip in past the knot witch I didn’t know at the time it hurt so much and I couldn’t do anything as I felt his cock getting bigger and bigger as he humped me relentless but then it got weird as all of a sudden I started to really enjoy his cock sliding around in my ass getting harder and harder stretching my ass and I started to lean into him so he could get his cock as deep as he could it felt so amazing my cock started to get hard so I started to jerk off and push back and forth till I blew my load all over the floor no sooner I felt him start pulsing cum all over in my what use to be tight ass it took awhile for him to get off me but when his cock popped outa my ass I had another orgasm he then jumped off and I got up on my knees and felt all his cum oozing out of my ass all over my nylon track pants witch also turned me on as I have a nylon fetish I never once thought I would be into Anal or doing stuff with dogs but ever since then I let my dog fuck my ass and make me his little bitch