You have to stay away from him and start your new life without him by your side.
Now, I know what you are thinking: “how do I make my ex miss me?
It’s also probably why you are now asking yourself (and me) how to make your ex boyfriend miss you. I am going to teach you, how to make him miss you and want you back.
Which is probably what happened to you and your old flame.
And even when a couple has everything going for them, things can fall apart.