Your ex cannot stay mad at your forever if you prove that you have changed for the better. If you still have plans of getting back with your ex, then you must learn to understand the needs of your relationship. You can still fix things even if you are no longer together. This is what I did when the same thing happened to me before.

I got my ex to welcome me with open arms again by having an open mind and identifying the points where I have gone wrong. I made certain amendments which proved my worth to my ex.