Very late response as well, but it is kinda late for me to follow your advice. Since I first posted I've been spending even more time with her, and as you said, my feelings for her only got stronger. It wasn't too long after my initial post that this happened, actually. I've talked to a few of my friends about it, and the gist of what they've said is that it would be wise to be honest and tell her I still have feelings for her. My problem is that last semester, when I got dumped, my emotions took control of me, and my grades really suffered for it. I need to make sure my cumulative GPA gets above a 2.5 this semester, lest I lose my scholarships, so making sure I'm happy is very important for doing that. If there's a chance that the relationship would go down in flames before then, then when I tell her how I feel I should also make that clear.Very late response, but from past personal / friend similar experiences, I think you should distance yourself a bit from her, until your feelings for her 'go away'. Most people have a hard time handling unrequited love (on both sides of it), so staying close to the other person is not going to help, as the feelings might only get stronger.
If you're worried because you want to keep your friendship with her, I think that distancing yourself at least for a couple of months is still the best option. If your friendship with her was solid, there shouldnt be any issues continuing it in the future, and it will be much healthier than if you have conflicting thoughts about her.
Sorry if that's kinda confusing, its early in the morning and I'm typing this my phone.