<human>: Can you condense the text into a few key points?

I'm a 19 year old guy and I've been with my girl (who is of the same age) for almost five years, but known each other even longer - we moved into a small apartment together last year. 

She is awesome, I love her, but for the past six or so months, she has started doing this weird thing where she says something like a confession, then completely ignores it and refuses to explain anything. One day she said "I only like you because you're tall and Asian, that combination", another she said "I would love to have a boyfriend like that" while we were going out, referring to a couple dancing. Fucking offensive things too, like she's trying to start a fight, but she only makes one comment at a time and then go back to normal, like she's not mad at all. I've stopped reacting or asking about it when she makes one of her comments, because she'll ignore it. This isn't a huge issue, but she is doing this increasingly, it's annoying and how do I make her stop, why is she doing this?
<bot>: Girlfriend suddenly started making strange remarks but we never fight, and she seems sincerely happy and loving otherwise, trying to figure out what she's trying to do and what to do about it