If you're wondering how to win back an ex, one of the best things you can do is to make them jelous of you but in the manner that you think.
I personally don't believe that dating someone else just to spite your ex or make them want you back is the answer.
It's wrong and giving the person you're dating the impression you like them will come back to haunt you, I promise.
But there are ways to do it without the need of your ex to see you with someone.
One way to win back an ex is to let them see you acting free and completely oblivious to the fact that you were once together.
This can be done pretty easily from being at a party, class, or wherever you two can see each other, just as long as there are other people around.
Now don't get me wrong, I'm not saying you should ignore them, because that makes them happy.
People are very spiteful and feed of other people's emotions, however when you act in the opposite way and ignore your impulses to talk to your ex, call your ex, or try and settle your relationship by talking, and instead giving off the impression that you're fine with the breakup by being happy, and acting as though you were never together, you will cause your ex to notice you but be curious as to why you don't pay attention to them.
They will then WANT your attention and will crave it more and more the longer you repeat the above strategy.
It's in our nature to want what we can't have and the more you play hard to get, the more need you create for the other person to want you more.
If you do this right, your ex will make the first approach to you and will want to fix the relationship.
It's definitely one of the most powerful tools you can use to win back an ex!