A wing and I went to a local dance bar last night. Place was absolutely swamped, so swamped it was hard to even get a read on the place. I go to grab a beer and a the heavens above drop a cute girl from the sky on me. She's ordering a drink next to me and starts chatting me up. Within seconds she's laying hands on me which I took as a green light to fast track kino which I did. Problem with her is that she was a total butterfly with the attention of a goldfish. She took me outside to meet her friends (most turned out to be guys) which she went ahead and flirted with. A few more times over the next hour I was able to snatch her away, get her attention, dance etc. In the end we danced and she just said to me "I'm going to wander around now" which I took as a "Okay I"m done with you time to fuck around with others." My question: What moves would you pull with this girl to send her the message "no you're mine for the night."

You don't, at least not in the way you are saying. She is an adult with agency who can choose to do whatever she wants. Sooooo if you can remove that possessive aspect of it here's some advice.

Immersion.

You have to hook, and immerse her in the experience of being with you. Some guys may call it the bubble, when you and a woman are interacting and everything else is just barely audible background noise. When you can do that well, she will ignore everything else going on around her short of threats to her physical safety. There are several ways to do this, I'm sure others can chime in with their preferred versions, but the biggest aspect is projecting your sexuality through eye contact, touch and tonality, ESPECIALLY the first one if you need to practice all three.

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These hos ain't loyal