She must be scared knowing that you feel too attached to her...Also, if you actually mentioned "i love you", it could be trouble. A friend of mine, she was dating a guy who told her he loved her after 2 months and she dumped him. It's a hard situation but I suggest that you try to make things more challenging in your relationship. If you're always nice and treat her like a princess she'll get bored and will tell you things like "I don't feel the same way anymore" and so on. Good Luck!
-to be nobody but yourself in a world which is doing its best, night and day, to make you everybody else means to fight the hardest battle which any human being can fight; and never stop fighting.- e.e.cummings