Looking to Make Some Changes

Hey fapstronauts, I'm Lurch (not actual name) I'm 18 years old and turning 19 in June.
A bit of non-porn related facts regarding myself: I'm 6 foot 4 inches, slim athletic build (played high school soccer, basketball, track and cross country running, continued to run varsity cross country at my university as well) black hair, blue eyes, and decently easy on the eyes.

My porn history:
I have been using porn since the fourth grade! At first the thrill of just seeing a naked woman was enough to get my rocks off (pre-puberty), however as most of you guys can probably relate to my tastes quickly evolved. I remember I didn't properly start PMO'ing until the seventh grade when I got my first Ipod. Boy was that a game changer!! A vicious cycle started to happen in where all I could think about was sex, it didn't matter if I was in school, on a sports trip, or with my family; I frequently had the need to PMO. What started as the need for it once a week became once a day which turned into 2-3 times a day which in turn brought me to the need for it 4-5 times a day and frequently when I would O I would have the need to go again never-mind the fact that I had just O this would cause me to on occasion spend more than an hour in the washroom or stiff in my bed furiously death grip masturbating trying to reach my 4th in a row O, habits that I am now trying to quit. I also notice that it is hard for me to hold up girl friends (friends that are girls) because I'm just thinking "hey there's a pair of tits and an ass" thats literally it, I believe this is my mind falling to the pornification of the world where sex is the nasty underbelly of every conversation I have with a girl. My habits would see evolution over the years through junior and high school, I'm now almost finished my first year in University and have finally come to the conclusion that these habits are affecting me negatively and that it is time for some change.

My relationships:
I have had one serious relationship in my life and it was during my senior year of high school she was an Italian international student (I'll refer to her as Cat) and she was only going to be in my town and school from September through till the end of June this was a fact that I took note of as by the time the stars aligned and the situation was just right I talked to her. Much to my unknowing this entire situation was orchestrated by Cat as she to had eyes for me. It was that night that I asked her if she wanted to hang out and she actually said yes. Over the next two or so weeks she would come to my house and we'd watch movies, bake, and talk by the end of those two or so weeks on Valentine's day I officially asked her to be my girlfriend. Thus starting the timer on our relationship. The next 4 and a half months were a blur, I had taken her V card by the 1 and a half month mark and within the next month I told her I loved her. I had shared some deeply personal details of myself to her. I learned so much about this wonderful person. All of a sudden it was my grad week and Cat had only about a week and a half left in Canada, my PMO habits persisting through the relationship even with consistent sex. During the prom afterparty I drunkenly noticed a girl that I had not seen in like 4 years. She was kinda weird and fell into the "all i want to do is drink and have fun, while occasionally experimenting with drugs" group of girls that would also frequently be victims of mental illness and often would skip school. I started talking to this girl while Cat and I were still together she took notice to this but only would tell me after she had left back to Italy. By the time the day came where I would have to say goodbye she came to my house and we simply talked about our time together and the bold plans that she would come back for Christmas or I would go to Italy over Easter break. None of these would come to fruition as the second that she gave me he last kiss and walked out my door it hit me like like a ton of bricks I started bawling unable to believe that she had left. In this state I would snap chat the other girl and within under a week I had already moved on to this rebound girl. I eventually ended up taking her V card before the summer was half over and by mid August I let her know that it simply wasn't the same. Cat had already heard of this and just like that I broke her heart to. I think porn is the reason and antagonist in this situation, tricking my brain into thinking newer is better, while disregarding all the bridges I had built with Cat. Which included a trip with her parents and brother while they were visiting Canada. Now there is not a day that passes where I don't think about Cat and all the wrongs that I have committed and I frequently find myself believing that she was the one for me and I'd fucked it all up.

My Goals:
I hope that through NoFap I can re wire my life and brain into a healthy one that doesn't need the constant stimulation and release that comes from habitually indulging in Porn. While along the way possibly make some friends with the same goal of quitting this destructive habit.