If you had a love partner in your life and now this person has left you for someone else or from other reasons, it's very likely that this ex partner will have the impression you still belong to him/her.
This is a fact.
Now everything has been said the step has been done, the person who left you thinks that you suffer in pain, there is a very good method to prove your disappointment and that is by meeting another guy.
This will make your ex explode like a bubble and act to try to repair his/her relationship with you.
Don't get in the wrong path of showing nice gestures to the new person, if your past lover will see this, nothing could make him come back to you.
So even if you do it try not to do it in a public place.
You don't want your ex love to think you are trying to make him/her feel it's the end of the world, don't be so cruel to the poor guy.
Arrange this meeting to take place somewhere you know the ex will appear, for example the restaurants or public places where you used to go.
If you have fun at the date show this to your ex but not as it would be intentionally, make him a little skeptic and confuse and send him/her a text on the phone with your new beginning in life.
Act like you are not aware of his/her presence.
Making your ex partner jealous is difficult for some of you but if it's the last method of repairing damaged relationship use caution, being too harsh on your ex will make the guy leave forever and you don't want that.
Don't use this method if you are not sure you want to really regain that person otherwise it will be bad.