It is one thing to get your ex back, but if your ex doesn't love you what is the point? Here is how you can get your ex to love you again, more than they did before: Become Scarce- As the saying goes "you don't really know what you have till it's gone", the same goes for your ex; they will not know how much they want, need or miss you until you go away.
You should ensure that you are not calling, or trying in any manner to get a hold of your ex.
You should also become visibly emotionally distant- this means you can still carry love and affection towards your ex on the inside, but on the outside you should show completely platonic feelings towards your ex.
In the meantime, you should become scarce by taking up activities that will ensure you are getting better; such as still seeing friends and family; going out and working accordingly to better yourself.
Take Care Of Yourself- In this time, your ex is testing you to see if you can get on without them and stand on your own two feet.
The most unattractive thing that a person can see, is someone they loved totally go downhill inside and out.
Workout, take care of your skin, clothing, and hygiene much better than you did even before.
Become the best looking that you have ever been, and ensure that your mental attitude and health is always in check with positive thinking.
When you show that you can take care of yourself away from your ex; you prove that you are more versatile and desirable for a relationship; since you do not have to be 'spoon fed'.
Consider that your ex has enough problems already, and doesn't want to have to babysit you into always being the best you can be.
Your ex wants to see this as a change you can make on your own, not something they have to force you to do.