Not sure if this is the right forum to post in so please move if it's not admins.

Basically, I've recently had an attraction to a girl who used to live with my two best friends. They no longer live together, but I'm still in contact with this girl. A few nights ago I messaged her on Facebook saying we should catch up sometime for drinks. I ended up getting her to give me her number without asking and she came over last night for a "movie". Well, the quotation marks weren't needed in the end because nothing happened.

The thing is, I've known her for a year briefly but never shown any interest. I've been alpha with her since I've known her, and I'm now looking for ways to show my interest and find out if she's interested. We are going for drinks at a bar on Thursday and I was curious as to how I should play it to show my intentions. Last night went very well, but I feel that by not disclosing my intentions last night the friendzone might be on my doorstep. I know she's had FB's in the past, but at the minute she's single and doesn't know many people in the city we live in, so I don't think it should be too difficult. I just need to disclose to her that I see her differently now.

Any advice?