She Has The KeY To My Heart!!!?

ind go crazy!!!!? Ok so I work with this girl for a long time, I am a 19 year old guy. Recently we exchanged numbers and started talking and had so much in common. We talk in person and on AIM, recently AIM I confessed I really started to like her and she basiclly said she likes me but she is a private person and really wouldent express if she really liked me or tell me how she felt about me . and it would depend on me if she would let me know it. Ever since then she hasent signed on AIM. I seen her in person today and made small talk , I asked her about how school was and stuff.but we usually have deep convos on AIM. Do you think. She likes me or not, what should I do? Should I confess more in person? She hasent signed on in like the five days since I told her. I jus can't stop thinking about her. I can get girls but I don't even talk to them now, I don't want to risk the potential rrelationship I could have with her. Should I confront her directly even more, wait until we can text( makes it easier) or should I do something special .