o    Make your ex least of your priorities.
Try to prioritize important things that need attention instead of dwelling over your ex.
When your relationship ends, it is the best opportunity to focus on your job, friends, family, or anything that can divert your attention instead of thinking about your ex.
An ex lover should be on the bottom of your list.
Never put him in a pedestal as it will only contribute to their ego.
o    Make him curious.
Determine if you really want your ex back, if the answers yes, try to figure out if your ex is still interested in you.
Try to be unavailable for a couple of weeks or do not accept invitations from your ex as much as you could.
This will trigger your ex's curiosity and will want to find out what's keeping you busy.
Play the act and make him miss you.
Like they say, absence makes the heart grow fonder.
In the meantime, enjoy yourself and live your life to the fullest.
o    Be independent.
Nobody wants a clinger so don't get yourself overly attached to an ex.
Your ex will assume that you are needy of him in terms of some aspects.
Stop relying on your ex.
Doing so will trigger your ex's curiosity and will think if you've already moved on.
o    Broaden your horizon and flirt.
There are a lot of methods to make your ex jealous.
Ask someone, whom you can ask to along act with you to make your ex jealous.
Just don't overdo it though because your ex might think that you have moved on and that they should consider that option as well.
These helpful tips would be of great help when used properly.
  In no time, you will get your ex to come back to you using these quick psychological tricks.