Do girls like when flirting if the guy puts his hand on her lower back?

I've never been someone who flirts a lot and recently I've been trying, I've been doing well, I but when I put my hand on their lower back (I do this without noticing) sometimes they get really close and I'm good to go, but other times they go away. I'm I doing it to early or shouldn't do it
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Do girls like when flirting if the guy puts his hand on her lower back?
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