<human>: We're both 21, I'm a male, she's a female. She has a boyfriend, but I'm more or less ok with that. 

Our relationship is not that stable though, and I'm not really ok with that. I mean, friendship is something I value, and part of being a good friend, is just being consistent with your friends, and explaining if you're feeling off or being rude. 

She has these periods of being very warm towards me, and then very cold towards me. I try not to read too much into it, but sometimes it's just so odd that I cant help but notice. It always happens after we've spent a lot of time together. The reason this confuses me is because I'm not the one who initiates these times spent together.

 If I was, I could attribute these periods of coldness/distance to her trying to tell me that we spent too much time together. I agree to hang out, I don't do anything particularly inappropriate, just standard friendship "flirting" between anyone who is good friends, we tease each other about things that we know the other person is sensitive about. I mean, we've been friends for 2 years already, I think I would know if I went too far with the flirting.

I know that she has some problems with her boyfriend, and I'm PRETTY sure that these problems also coincide with the times that she wants to spend more time together. Whether this is some kind of using me technique, or she just happens to have more time and wants to hang out with me during it (she doesn't have many other close friends besides me)

So, I'm not looking to escape the friend zone, or date her. If you're a girl who has been in a similar kind of position before, can you shed any light on what she's thinking?

Much appreciated

Can you give me a shortened version of the text?
<bot>: I don't want to date her, and I don't think I give off that impression, but she still goes hot and cold. I want to just have a good friendship.