<human>: Could you distill the essence of the text into 1-3 sentences?

My boyfriend and I just broke off our relationship after 4 years together. We met freshmen year in college and dated until that first summer, when I broke it off with him because I was scared about how serious we were getting and thought we were too young for such intense commitment. However, sophomore year rolled around and I realized that all I wanted was him so we got back together and have been together ever since. We are now in separate graduate schools across the country and after 8 months of long distance decided to break it off two days ago.

I am devastated and still love him so much but I know it is the right decision for us. Because of our graduate school programs we won't be able to be together for at least another 2 years and we mutually decided that it would be too hard on us to be long distance for so long. Additionally, I have always had this feeling that we weren't "the ones" for each other. Mostly because he is just a much better person than I am (nothing against myself, but he is just so kind and selfless while I am a little more hotheaded and definitely took more out of the relationship than he did which was not a healthy balance to have).

However, even though I know it is for the best, I cannot shake this fear that I will never find someone who knows me as well as he does. He was with me through the most formative years of my life and helped me through a year of life-altering panic attacks that at one point made me too afraid to even leave my room. Because the majority of our relationship was through college, we were able to be attached at the hip in a way that is not possible in the real world. As cheesy as it sounds, he truly was my other half. I just can't imagine myself having that same kind of relationship with someone else and it is making me regret our decision to end things. How can I get over this feeling? Any advice would be appreciated.
<bot>: I am afraid that I will never find someone who knows me as well as my ex does because of the formative events that we lived through together. How can I shake this fear?