Easy there Killer! Sounds like you were moving wayyy to fast. The first smart thing you did is to hold back from talking to her. Give her space like she asked. However, you don't have to sit around waiting for her either. Go out, meet some other girls, people etc. Watch how other people's relationships work or don't work. I think you were so into this that you were smothering her. It usually takes as long as the relationship lasted to begin with to get over it. Biggest thing is to RELAX! Even if this is the end of this relationship, there are many more coming up for you in the future. Good Luck!