So, long story short, this was maybe a 1 year cycle. We met through our friendgroup and started getting closer. She rejected me one time becasue she was in a relationship and I pulled back. When that was nearing it's end, she came back and wanted to hang out and talk. Later on as we got close she rejected me again, and I stopped initiating with her. Then she came back AGAIN even stronger, lots of hangouts which people would consider dates, lots of touchiness, closeness, to the level where even our friends and strangers alike thought that we are going to end up together or already are. Then she grew cold, rejected me again and I was trying to actively avoid her. Very soon came back again even stronger, even using our friend as a buffer to make sure I'm present at events saying stuff like "Tell X that it's mandatory for him to be there too" jokingly (I want and we almost kissed when we were drinking), and inviting me and our friend a to an ice skating event where she suggested that me and her dress up in matching outfits, which she didn't even mention to our friend. Now there are photos on her university's page where we are skating while holding hands in matching costumes.
She was still being warm but at New Year's eve I decided that I can't do this any longer. I went no contact for a month and shut down all of her attempts for anything with excuses. Then the tipping point was when she sent a photo of her posing in front of our photo together on a bar wall into our fucking minecraft group chat. Even our friend was confused why she sent our shared memory there and why not to me directly. In my eyes this was straight up games, so a few days late I told her that instead of avoiding her longer, I'll be honest and I can't be friends with someone I have feelings for, it's not fair for neither of us. All she said to my paragraph is that "I understand, and I'm sorry".
A week later she acted as if nothing had happened. She was sending me reels and TikToks. I didn't even open her messages. Then from our friend I heard back after they talked that she finds me very attractive and listed all the things that she likes about me but she can't imagine a relationship with me and she can't do anything about it. She also told him that she considered me a very good friend if not one of her best friends. When I asked our firend why is she still sending me stuff, does she think that I'm an idiot and think this low of my boundary? He said "No, she does not, she just doesn't know what to do with herself.". And later I also heard from him that she is not sleeping a lot lately. When I asked why, he started saying "Becasue she doesn't know…" and then cut himself off and never finished. Then she posted a song on her story from Sleep Token – DYWTYLM, after I didn't go out with her and our friend (she told him that anyone can come, knowing damn well that we share a dorm room). The lyrics felt pretty targeted. And two days later she shared a mirror selfie on her story, which she didn't do ONCE in the 7 months when we were very close and not even before that. Also, when I shared an after gym photo on my story she nearly instantly viewed it and liked it.
I don't understand what is she playing at. She says one thing, but does another. I hoped that if I told her my stance, that would be the end of it and I could move on, but this whole situation has been echoing for nearly a month.
What is she doing or trying to achieve with this? Does she think that my boundary is a joke?