Did I missed out on my chance?

I was at a bar and I was waiting on the bartender to give me a drink. This girl came right next to me. She purchase a beer. So I said into her ear, "I never seen a girl that likes beer before". She look up at me and smile saying, "Yeah I'm a beer chick". I told her when I see her again that night, I'll buy her a drink. She smiled and said OK. After that, I saw her give a me a couple of looks. A hour past and I was looking for her. Couldn't find her, but my friend knew her friend. So I might see her again. Did I miss out on my chance that night?