I know this post is late but wanted to respond to your worries. I too had a situation much like yours. I dated the same guy for almost 8 years. After I graduated from college I moved home to be closer to him and we suddenly realized that over time we both had changed. It was time to take a break and find ourselves and make sure we still wanted what we had. While we still loved each other, and always would, we had to make a wise decision.
The same goes for you. You need some time to find yourself without him. You will grow and so will he and you will either be miserable without him and go back, or realize that perhaps he was not all that you wanted. Be true to yourself and follow your heart

Someone gave me the famous poem "if something is yours, set it free, and if it comes back it was meant to be." I read it every day and realized it was true. He did not come back nor did I go, but we had a great thing but needed to move on
Good luck and take care of you!