I liked Hopes advice. Focus on just friendship for now.
Also try to think about the early days of both your R with her and the first 1-2 months of your sitch. The former regarding why you fell in love with her, esp. what in you was drawn to her qualities, and the latter in terms of recalling the rollercoaster effect of her and your moods/attitude shifts. This far into your sitch, it may be harder to note when one or both of you going 'down' is happening.
