Dude with out doubt you have feelings for her.

And who knows maybe she has feelings for you too. Time will tell.

Just play it cool and DONT bring the topic up, wait for her to bring it up.

In the mean time, go out with other women. This is probably one of the best tests to see if a girl has feelings for you. She will want to know how the date went, how far you got with the girl, if you really like her. Oh and another brilliant one, just talk to her about some girl that you 'like', but talk to her as you would to a guy friend of yours. If she wants to be just friends then thats what you give her. You will soon see if she is willing to talk to you and give you advice about this other girl that you 'like', or whether she doesnt enjoy talking about it. If changed subject all the time you know that its bothering her and she probably has something for you.