How do you forget someone who used to mean the world to you?

How do you forget the smile they’d put on your face whenever they texted you?
How do you forget the beautiful words?
How do you forget that he was the first person to ever call you beautiful?
How do you forget that he was the first guy to ever make you feel wanted?
How do you stop yourself from thinking about them every chance you get?
How do you move on so you can say yes to the other guy who asked you out Friday night?
How do you stop the tears from coming when you see your ex-best friend talking to them?
How do you stop getting angry whenever you think about the fact that he chose her?
How do you stop yourself from screaming when you see them kiss?
How do you keep walking when you see them in public?
How do you stop yourself waking up at 2 AM in tears, craving their arms around you?
How do you stop expecting the text that’ll never come?
How do you stop wondering if he ever had feelings for you at all?

How??
I’m so tired of living like this.