So I met this girl in September and we talk. We're friends, sometimes hang around the same people, and we have one class together. I talk to her online. But not as much in person. Whenver I IM her online, and she says hi back, I usually don't reply right away and she follows up with a whatsup. Also, she has been the one who gives me advice every now and then on my past problems. And I help her a lot on tests/hw and such. I want to ask her to winterball but I want your guys' advice on this situation and how I should play this