What to do im in love but i think i messed up now im depressed?

yeah i knew this girl for a while and we got kinda close by helping each other out with our art portfolio's for college. one day she said just friends even though we were just walking our dogs and i said nothing because she was after a bad break up a while back. but last night on paddy's day after a load of trying i got in to the club where she was and we had a shot and went dancing. we were getting close and she kissed my cheek and my neck and i was too much of a women to do anything, the one girl i have dreamt of for the last couple of years and then her friends took her home with out me even getting a word. typical me being irish i polished off a bottle of Jameson's finest whiskey and was depresses. i woke up this morning feeling so bad because im afraid that ive wasted my chance and that she could just say now "Just Friends again" if this happens im sure i will truly drop into a clinical depression, please id love some advice is it me being a fool or what!!! All advice is greatly appreciated thanks