I’m always friendly first; what are some good transitions into flirting?

I always lead with being friendly, to where I almost forgot how to be flirty and put out feelers. Any suggestions how to segue from friendly to flirty?

For instance, last night while waiting to get in a club a friend and I started talking to some girls in line behind us, later on they start dancing next to us. They were cute but wasn’t sure how to make a move.

To probably make things more complicated majority of my friends there were women. So not sure if these girl’s thought I could have been in a relationship or what.

I’m always friendly first; what are some good transitions into flirting?
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