After a dry spell, and subsequent rusting of PUA knowledge and practice, I've met several girls who are interested. I'd like to go out with all of them, but it's always been very hard for me to be honest about one particular thing: when I'm not into a girl anymore, I find that I lack the words to say it.

I'd like to date these girls, get to know them, but maintaining a casual environment. How can I achieve this, and if it doesn't work out with one, how do I tell her? I know this last one is obvious in my mind (I'd rather date A more, instead of you), but there must be kinder ways.

Also, I'd very much appreciate any links that would help to refresh this rusted knowledge.