I am so sorry about that, at least you can change yourself. Well, I highly recommond you to get this book called Bonds that make us Free by terry warner. Healing your relationship and coming to yourself. It helps a lot! For next 1 month, do not contact your ex and start to focus on yourself. Like start with working out, and get in touch with your old friends who you haven't spoken to in ages. Do not ever make an effort to call your ex. If he calls you, thats great. Keep your conversation really short and end the conversation with kindness. Say things like, Hi, how are you? I'm sorry I can't talk now since I'm busy with something at the moment. Have a nice day then hang up. [with a happy tone]
What you need to do now is go out and have fun, act like you are 100% happy without him. [Do not give him a bad attidue" or act like you are jealous if he is talking or going out with a different girl] Hang out with your family and go do shoppings with them. Ask your sibilngs or friends if they are interested to learn how to do ice skate, etc. Find something you are interested in that you didn't get a chance to try. (A new hobby or something like that) When you run into your ex again later, he might ask you what you have been doing. You can say you have been busy with a new hobby, and other things. It is a good thing because he will be saying to himself like oh wow she's moving on and learning about new thinigs. That's cool(it shows that you are getting more independent)
I'm pretty sure that he will realize what he is missing out when he finds out that you are moving on too fast. I warn you, he might want you back. You can live WITHOUT him, because you are the only person who can make yourself happy not him. It is ok to love and care alot, but it is you who can change what you are now.
Another book you should get is "It is called a breakup because it is broken"