What do you say to a girl when flirting face to face really close?

When I'm flirting really close face to face, I don't know what to talk about pr how to act, and it happens to me that girls sometimes start pulling away, like they start to get bored any suggestions?

Just casual talk
Try compliments
Go for the kiss
Get closer and se what she says
other (please comment)
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What do you say to a girl when flirting face to face really close?
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