No dude, you got to just let it go. You need to know you can do better and you need to man up and just drop it. She doesn't want you, don't chase something that doesn't want to be chased. It sucks, but you need to face reality bro it's over.
Three seconds. That's how long it took. Your shoes. Your posture. The way you held your drink. Whether you looked at the floor or looked at her.
She already filed you away. Interesting. Boring. Safe. Bold. Before you even opened your mouth.
Everything you say after that is just her confirming what she already decided.
So stop rehearsing lines. Fix the first three seconds. Stand tall. Look up. Smile like you mean it. Walk like you belong wherever you're standing.
The words come later. The impression comes first.