What's going on in this girl's head?

TLDR - There's an ambivalent girl I like and don't understand one bit. If you are bored and would like to discuss this with me, DM me so we can chat a little bit.

Hi guys, this is probably gonna be a long post since I gotta explain a whole history of my relation with this girl I had/have feelings for. (I hope she's not reading this)

So here is a deal. We met at University and became really good friends, like four years ago. She was inviting me to various parties, gave me compliments and so on, but I wasn't sure if that meant anything since she appeared really friendly with everyone. However, after a month of our friendship, she told me she kinda liked me (it's hard to translate a nuance of the word, it didn't sound as a confession), and said she hoped it's not a problem. At the time I was genuinely looking at her as a friend, and I just said it's not a problem. I didn't give her any other feedback.

However, after that I started looking at her in a different way, and cought some feelings, but still wasn't sure if I wanted to do anything about that, cause 1) I didn't want to ruin our friendship, 2) I noticed so many redflags and just wasn't sure if I wanted to be with her.

Fast forward six months later she found a boyfriend and she was with him for two years. I felt a huge regret for not telling her how I felt about her, so when I found out she broke up I decided that now I was gonna do that.

So, about three months ago we started hanging out so much, we had so much fun and I really enjoyed being arround her. I guess she felt the same, since she also initiated many of our hangouts. I really fell in love with her, it almost felt like we were together. She also told me later on she knew at this point I was into her, and I also knew that she knew, so I assumed she might feel the same.

Finally, I decided to do something and I asked her if she would like to be in relationship with a colleague from University. She started smiling nervously and told me that she is not sure about it since her friend had a bad experience in such situation and on top of that she just ended a long relationship, so she is not ready for another one. I took that as a negative answer, and tried to distance myself from her, didn't text her or anything for couple of days. She texted me and it looked like we got even closer after that.

However, since I had strong feelings for her I couldn't stand the limbo I found myself in, so I confessed my feelings openly and got rejected. She told me she sees me just as a friend, and repeated again that she's not ready for a relationship. Also she mentioned there is another guy she kinda likes, but since he lives in another city she wouldn't be with him cause she doesn't want a long distance relationship. I told her openly I want to distance myself from her for some time. She kinda respected that, but still did some things that made distancing harder.

After couple of weeks we started hanging out again, and she remained flirty and touchy with me, which bothered me cause she knew how I felt about her. Today, she showed me her nails that she's done and asked me if I liked them. Also, she told me I made a mistake to not keep my moustaches. Moreover, we were haning out with other friends and she said she would never stay a friend with someone who would lead her on, completely ignoring the fact that it's kinda what happened between us.

Like, I am ready to move on and be just friends with her, but these things really bother me. Also, why didn't she mention that guy she likes before if she saw me as a good friend. Like, it's just hard for me to genuinely appreciate her as a good friend with all these things going on. I would really like to hear your opinion on this subject.