>>7679434Anon, this is not going to be easy. You're going to question your decision. You're going to spend many nights alone and remember how nice it was to have her near, how nice it was to have a companion. You might start to feel better after months, and then face some other unrelated hardship that triggers something in your mind that makes you wonder about her, how she's doing, and question whether you made a mistake or not. It's a long road, but eventually you'll think of her less. After the better part of a year you might realize that you haven't thought about her in a week or two. I went through a very long term relationship breakup nearly two years ago.
I had met my girlfriend at 15, we were friends for two years, and then we dated from 17-25, our lives were completely intertwined. I guess I learned the hard way that the person you select at 17 is unlikely to be who you would have chosen at 25, for many reasons I won't go into here. It took me a long time to get out of this relationship, and I was feeling dead inside until something happened which made me snap and end it. Sometimes you just know for a while that something is off, and it can take a while to pump yourself up to do what needs to be done, which isn't ideal, but normal.
Eventually, you'll start dating again and have memorable experiences. The freedom of that will vindicate you. You'll meet new and interesting people who you otherwise wouldn't have met, and it will add to you life, even if it takes a while to find the right one. For me, I took more than a year before I started that, and it has it's ups and downs. Just trust the plan my friend, it will all make sense in the end.