Sounds like she is possibly jealous maybe?? Regardless of why these things are being said I think you need to sit down just you and her and gently over a coffee bring it up. A friendship that is great 99% of the time is generally a good one, and one that shouldnt be thrown away. And if she likes you as much as you like her, she would prob be horrified to know her comments have hurt you so much. Just be prepared though that that may be the way her other relationships are and she may not understand so you may need to chose your words to explain it well.