I have a best friend that I have underlying resentment for

Before you say something like "how can you call this person your best friend then", I implore you to hear me out first. I have been feeling this sense of resentment for quite a long time. It started off small a few years ago. Simple things that i just brushed away as something that irritated me. She used to always say my joke right after i made them to the same group of people ( she would wonder why nobody laughed). I made nicknames for my friends and she'd start claiming it was hers, and spam it until they get irritated with the name. It was small things like these, nothing big but not small enough for it to go undetected. 

However, something big happened a year + back that has really stuck with me. I am not proud to admit it but my partner at the time and I had done smt (iykyk). I was not proud of it, at the time I felt very disgusted at myself and regretted it. I went to her naturally as my best friend. To rant a little bit about this private thing. How it felt and how much regret washed over me. She. told a few friends. I had found out because she was the only one i told and another friend asked me about it. Of course I felt betrayed. This was something private. Personal. Traumatising. I confronted her, she still dared to deny it, saying I must have told somebody else. 

Since then I had thought we had moved past this issue. Our situation is very unique. our lives are too intertwined that stopping the friendship would have no use.  So I forgave. But with that i also learnt to be cautious with my information. I dont tell her much anymore. But now I realised it is not even just that, that makes me resent her. Little by little, I started noticing things. I thought i was just trying to find reasons to justify these feelings but instead I found confirmation.

She had always been that friend that is boy obsessed. but it got extremely bad Last year. I realised, every conversation we have ever had since then, have all been about different guys she likes or is talking to. And she is obsessive, stalking them constantly on social media and is nonstop telling me things about them. Listen, I dont mind talking about crushes or potential but this is like really nonstop about the same guy for months. Same information, same details, same questions. At some point she was obsessed with my own brother and he had a gf. She kept meddling with everything till she became one of the reasons they broke up. Even after I kept telling her to lay off and stop wedging herself between. 

She also is a big hypocrite and a liar. I watch anime, I have been watching anime since 2019. She constantly shits on me for watching it, saying she thinks it's weird and cringe. Which, hey, I feel the same about her romance shows so it was fair game. BUT, she watched an episode of an anime and posted it, FOR A GUY. And you know what, if it takes a guy for her to appreciate it, its fine. HOWEVER, she started talking to me like she knows shit, like she genuinely believes that I dont know anything about it. LIKE DONT PMO.

On the liar part i meant PERFORMATIVE ALMOST BORDERLINE PICK ME. When there is ANY guy around she switches up so fast. Like shit she would say she hates suddenly becomes cool. For example, for yearsss she expressed how much she hated motorbikes and how unsafe it is and what not. But my brother is really into bikes and happened to like a picture of a girl on a bike. Let me tell you, the next day she posted herself on her friends bike on this exact same post and put future biker girl... The disgust I had spread on my face. This happens all the time. The worst part of it all i the fact I truly know her and watching her put on this fake personality makes me cringe so badly even the fact she can do it right in front of me, KNOWING that i know what she really is like. 

Its gotten so bad where she would deny it when i call her out. One time we were out, on the bus back to my house, my brother called me asking if we were still outside and could buy bubble tea. I told him we were already in the bus. I said to my best friend "He is at the gym, isnt there a bubble tea store downstairs?". she deadass said "What. No, it closed like super long ago". Like in a are u dumb kind of way. When we got back and my brother brought it up how he wanted milk tea. She said "Wasnt there a bubble tea store below the gym? why didnt u get it?" and my bro said it closed already. WITH A STRAIGHT FACE she said " OOOOOH I didnt know thattt". BRO WHAT THE ACTUAL FUCK. I  called her out "Didnt u tell me it closed a while ago just now". She looked at me and said no i didnt. WTF. 

This took me a while to realise but she always tries to find a way to embarrass me or belittle me. I am German Malay. I can speak fluent German, English and relatively good Chinese. However I am not able to speak Malay, but I can understand it. Whenever someone mentions malay, she always makes it a point to mention that i Can't speak malay. When i say that i can understand it, she goes but like barely. Or she will say how come u dont know how to speak malay, in front of people i hardly know. LIKE GENUINELY STFU. She can only speak english and barely passes her malay. at least i can speak 3 languages and understand malay. Its always so underlying and never like really upfront. It pisses me off so much because she has this "innocent" act with everyone else but me. So I cant even justify myself because others dont have that experience. I genuinely dont even know what to do. There are so many more incidences but this are the main ones.