Need advice about a girl. Please.

Need Advice. I am a sophomore in university, and have been friends with a girl for the last semester, nothing more. She was a part of our friend group and we all got along well. Towards the last month of classes i noticed that we became a bit closer, a little more touchy, and one thing led to the next and we really hit it off. She must have spent 2 weeks every night in my room, where we would talk for hours, kiss, and just romance it was absolutely fantastic and it felt so much more real than my other relationships. Apparently though she had JUST broken up with her ex about 2weeks before this whole chain of events. She just really seemed to have strong feelings for me, and we even decided to go official for two weeks which was incredibly quick, we went for dinner, shopping, spent a lot of time together and it was amazing. Summer came and we were kindof sad, we decided to just be friends and it was okay. For the first month and a half we would text and talk everyday, skype atleast once a week and it still felt great. Over the next few months however we became a bit more distant, not talking much at all, maybe making communication once every week or so, so like nothing. Now it's a couple weeks before school and we started up a tad, and we decided to talk about it. She told me that we probably shouldn't have done what we had done that last month, and that she was in a very bad state after her break up, and that she had absolutey no feelings for me at all and was sorry. I kindof figured but it just rattles me a bit, those countless nights where we would just look talk and stare at eachother and smile seemed too real to just disappear like that. I felt like this was the real deal, only to have it shut down like this. We hope to still be friends, and I think I'll br alright, but i would absolutely love some advice. You can probably tell im not the most expereienced in terms of relationships. Sorry for the wall of text.