"why did she choose to see/date/flirt with me in the first place?"
Because as we all know, fantasy and reality are two different things. She was interested (as all people are in the beginning), then the longer you were together, there were more "real life" situations that come up and the veil of fantasy slowly starts to disappear. That's when she decided to really think if this is what she wanted long-term.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.