How can I know the difference?

Hi everyone.

I'm trying to comprehend, understand and trying to read these situation that I have being for some time. Please help me out here.

I got in contact and chatting with these wonderful woman, something completely new for me the way that happened.

A hour later we decided to meet at these pub for a drink and see if was a connection or nothing in particular. For me is a very odd situation. Last minute, impulsive, completely out of ordinary, and not far from home.

Getting there, she turned out to be, 100% my type of woman by choice and by heart. We finished the night together and was totally what I always wanted my woman to be like.

So manage to see her once again, and the connection I felt made me reverse back to my teenage years, shy and speechless, to a point that I stopped making sense completely.

Basically going from meet & greet nothing to lose cenario to I really like these women and want to see her again and try to be with her.

So. That is my delema, Girls, how do I know (what are the signs) that is a one off thing or that we have a chance to take a different approach and become something bigger!? How should I approach without compromising? What can I do?

And please, once again, if you have nothing relevant to say, just do a favour to all of us keeping your comments to your self. I'm a foreigner so English is my 5th language, so don't be petty.

To everyone else willing to help me with my dilemma Thank you in advance.