Has your ex taken the breakup in such a bad way that he/she is constantly looking over his/her shoulder to sprint away in case your face pops-up into view? In such a case running after your ex will be fruitless since you will not win even after catching up with him/her.
Instead, use these 4 ways to get your ex back when they're trying to avoid you.
1- Give your ex a little time to be alone without having you breathing down his/her neck.
This will allow your ex to calm down a little and also let some of the anger to slowly leak away.
This might also cause your ex to calmly analyze the situation and might also cause him/her to miss you after a little while.
2- Explain your side of the story without getting on your ex's nerves.
This can be done by sending a single email or writing a letter that explains your thoughts calmly and rationally.
Instead of talking and letting tempers flare out of control, writing is a better way of explaining your side without getting your ex in a foul mood.
3- You should also make efforts to improve yourself and also get into a daily routine independent of your ex.
Once your ex sees a better-looking you that is confidently facing the world, then he/she is sure to get impressed by your efforts to handle the breakup in a grown-up manner.
4- You can also contact your ex's friends and ask them to help you out.
Do so with great humility since your ex's friends might not wish to get involved in your personal battles.
However, once they agree to help you out then their involvement could convince your ex that both of you are simply meant to grow old in each others arms.
These 4 ways will hence get your avoiding ex back into talking mode and both of you can then calmly try to patch things up and head towards a new relationship.