Consider the following - the number of situations where success or failure with a girl rests on any one single utterance is actually very very rare, in my experience.

If she's into you, it doesn't really matter what you say, provided you're not making some obvious blunder. She's already biased herself to see you as someone she wants to get to know better.

And if she's not into you, you could be smoother than butter and it doesn't matter. Even (and especially) when you're right, even when you're getting to her, you'll just get bullshit or dead air from her.

Most of the time when you're in a seduction situation, a girl is an unknown degree of neutral, and there too, what you say at any given instant doesn't really matter because it's the vibe that decides things.

It's far better to say the wrong thing, and have the right vibe, than say the right things and have the wrong vibe.

Pay more attention to your state of mind and how you're feeling, rather than your exact words. If you can do both, but prioritize yo.