I've come up with a name for something that's happened to me and probably everyone else many times before, and I wanted to develope a method to use this in your midgame to build comfort and buying temperature.
My experience was like this: I'm in barnes and noble with a girl, I open a book of art by Dali, and I'm showing her my favorite picture. I turn the page and we find ourselves looking at an illusion of a girl's face made up of lines and bubbles. Neither of us speak. We're standing still, our bodies and torsos touching, with a little boob kino going on with my arm. There's an exchange of body heat, and we're both completely comfortable. This lasts a good 60-120 seconds in which there's this basically untouchable, comfort building kino vibe. We had a noticably different chemistry afterwards. It's rather obvious to both of us after a few seconds that the picture itself is not what's holding us in this position.
I was thinking about this today, and how it happened, because this happens all the time on accident but I would like to initiate this at will as part of my arsenal. I decided to break it down into little elements so I could fully understand how the connection is made.
The first element is comfort, about the amount you would need to put your arm around her for a picture and have her reciprocate. Or enough that she would give you a tight hug back.
The second thing we need, is a reason to stand so close in the first place. Something to observe that you can take a few seconds to ponder before noticing how close you are. A book with a neat picture is cool, because you could actually get even closer during an attempt to give her a clearer look at whatever it is.
Boob kino. I was doing some boob kino with my elbow, but I don't think that's necessary. I think as long as her torso is pressed against some part of your body, you're good to go.
Heat exchange. This is kind of awkward if you're standing this close to a girl you just met unless you're exchanging numbers or something like that. You could intentionally take a long time to give her your number to do this, I suppose.

It's an awkward feeling at first, but if you have that initial comfort level it's easy to adjust to, and then you're sharing heat comfortably and I think this part is the most important.. the idea of feeling the other person there, and being comfortable that builds the connection and makes this vibe.
Now hold it. Don't say anything. Observe whatever you're observing, but don't comment. Just be still for a minute or two. If she looks at you, make and hold eye contact, but don't make the vibe friendly/playful, make the vibe sexual.
If you're in a private place, this vibe is perfect for kissing her. After a minute of doing this, it should feel so natural to go in for the kiss it isn't even funny.