Sometimes, you have to realize that not everyone loves the same way you do. Not everyone shares the same values nor has the same standards on how a relationship should work. Of course it hurts when you find out that you do not mean as much to someone as you thought you did. It is totally fine to cry, to spend afternoons lying in bed listening to sad music and eating ice cream; everyone gets to a point where they cannot do it anymore. However, after a certain amount of time, you have to get up and live again. It might be hard, because all you want to do is to be alone and not see anyone. Fight against the urge to go back home. Go outside, spend time with good friends who encourage you, believe in you, make you happy. You deserve to live your life the way you want it to be. Therefore, focus on the people who contribute to your happiness, moments that make you smile, hobbies that relax you etc. There is so much more outside our cages; the world is such a huge place - you will find the right one when the time has come!
Meanwhile, live your life, smile, give each day the chance to be the best one you have ever experienced. Be grateful for the lessons - you were hurt due to realizing that some people do not care as much as you do. However, it is much better to see it now than living a scheme. You were given the chance to find someone better, someone who values you, supports you, sees you as the wonderful person you are. Say "thanks life for showing me what I do not want" and move on. It is hard, it is a long process and there will be moments of doubt. Never give up, do not look back - only to see how far you have come and be proud of yourself.
Have a great week!