I can't tell you how to make someone sincerely love you. I can't create feelings, passion. But I can tell you how you can manipulate feelings.
Jealousy is one of the strongest feelings. This does not mean that I advise you to immediately start dating someone else.
The best way to make him regret that he left you is to act as if it were the best thing that could happen to you.
You should act as if you feel relieved that he has done you a big favor by breaking with you. You need to be better, and this should be visible to everyone.
Start going to the gym. Hire a coach if you can. To avenge your own body is effective and beneficial for you. Become sexier than when you were with him.
Then try to go on a trip, release the negative and walk your new body in a bikini. Do not forget to take a lot of photos and look happy.
Let everyone know that you look better, that you are happier now.
If you have communicated closely with his friends, continue to do so.Remember the expression: "Keep your friends close, and your enemies even closer." Do not talk to them about it. Behave as if you forgot about him, because you are so busy with your life.
Use time to get better. Make more efforts at work to get promoted, or find a new job, something to impress him.
New body is not enough, you must have everything.
You should look like everything in your life is perfect, and that all this happens without it.
Have you got a dream? Do you want to get a second education? Want to write a book? Get on the cover of a magazine? Start going to this. He will be very jealous and proud that you have begun to realize your dreams. Change scares, but turning points in life require radical measures.
Then start going on dates, let them know that you are in demand with men. If you seriously want to manipulate his feelings (and you want, if you read this), start sharing selfies with another guy. Maybe just a little hint: a photo of dinner for two, you're in a foreign car and men's hands behind the wheel ..This should look natural, not staged.
When you are confident enough that you look better, that you are smarter and that you are more cheerful, that's when it all begins.
I know, at first you just wanted to write to him how you feel.Yes, to be honest in your feelings is a mature trait, but maturity and complaints are different things.You can be honest with him in your feelings when he asks you for a second chance, but not before that.
Now you must preserve your dignity, because it was he who abandoned you.
When you show that you are better off without him, find a way to “accidentally” meet with him, maybe in a common company. He will definitely be interested in you: why are you still not suffering from it? Yes, now trumps in your sleeve.Although he made you feel not good enough, now he is not good enough for you.Without it, you have a chance to realize your potential. And he will understand that it is he who prevented you from doing so.
Maybe he will even try to get you back, because men always want what they don’t have.
And this is the moment of truth. He wants you back, and here I will leave the decision for you. If you want to find out everything, this is your opportunity to talk to him, to say everything that you never said. Maybe you also want to return it, but maybe not. The last word is yours.