2 days ago, I bumped into an old acquaintance that dated one my buddys a while back. During the time I ran game on her and she showed levels of attraction. When my wing came with one of her friends we decided to change venues and went to a longue. We had alot of fun and everyone was enjoying themselves. Problem was I didn't escalate much comfort levels because I didn't talk to her much during the time, but did have some small amount of kino. On the other hand my wing spoke to her in a different laungage saying how fly we were, but my wing said she specifily said I was extra fly. That knowing I already had the upper hand I felt I was gaming. After we changed to another venue and continued to have a blast, but my wing's target put me on the spot and asked me what I thought of her friend. I frooze up and honestly didn't know what to say, so I replyed with "Shes fun & Cute". I felt that really gave it away. By the end of the night we went seperate ways and I left with no number close. But since she was an old acquaintance, I do have methods of FB & AIM contact.
Although we left seperate ways, my wing brought her and his target to a diner to eat which I wasn't at. My wing was overhearing there conversation in the diner while they were eating and he told me, they purposely wanted him to know that she thought I was cute because they were speaking out loud, but repeating saying she knew me for so long already.
Therefore I'm stuck in a postion where I do not know what to do because I do not want to come off needy nor do I want to lose this target. Please advise with any advice, much apperciated.

If you want this girl you need to grow some balls man. She and her friend made it very apparant that she wanted you and you failed to act. If this goes on much longer you will lose her.

Next time your out with her the minimum you need to do is let her know your interested. If she is giving you that many IOI's you can easily make out with her and possibly sleep with her depending on your game.

Quit the nice guy routine. From reading your post I'm envisioning a guy at the bar with his hands in his pockets not talking much to people and scared to act when girls approach him. Please don't be that guy.