extreme beastiality

so this is my first post on this site and im not exactly sure what to say because this was my first time.
it started out on a camping trip i was taking with my friends. we were going up to camp in the boundry waters in northern minnesota. my friend brought his german shepard ( like he usually does ). the day started out normal, we went fishing,took a canoe ride,and did a little hiking. as the night came upon us my 2 friends decided to go on a late night canoe ride and left me in the tent with the german shepard. i set up a seat next to the campfire and gus laid next to me. i reached down and started to pet gus and felt his strong muscular shoulders. i had never had a feeling like this before and i had been around dogs many times. i moved to the ground and laid down next to gus. he rolled over and started to breath heavily as did i. i rubbed his belly for what seemed to be a long time. it was then that i realized that his knot was throbbing. i took a look at it i had a feeling that i had never experienced previously.i reached knot and grabbed the knot. gus then started kissing me all over my face. i stroked his knot until the anticipation of having it in my ass was too strong. but then i thought my behavior was odd and i crawled back to my chair. then to my surprise gus mounted me. i had no other choice but to cave into this alpha male instinct and i pulled my shorts down and exposed my until then virgin ass. He missed my hole many times before i grabbed his cock and shoved it in. At first the pain was emmence because his throbbing knot kept growing larger and larger. Then as I became more and more used to it i began to enjoy it so much. As he kept going i moaned and yelled, not even thinking that my friends could possibly hear me, at this point I didnt care because this was more pleasurable than anything I had ever experienced with a human. I told gus to pound my asshole and that his knot felt so good in my tight virgin ass. I said that i will sucumb to anythign that you put down gus, just stick it in me and never stop. We f***** for almost two hours and it was unbelievable. When gus finished he pumped his hot cum into my ass it was amazing. We went back into the tent and he laid next to me until my friends arrived. They never knew anything had happened and they never will, but what I experienced that night was great and I have a new understanding for this type of thing. Love, K9cp hope to hear your reactions. Thank You