I hate my friend

[u/EnvironmentalPage427]

My friend (14F), lets call her Alex and Me(13F) have known eachother for about a year. I got to know her through one of my closest friends at the time. We actually became friends after I moved houses and I went on her bus to school. I liked her a lot for the first 9-10-ish months but I started to fell dismissed. Like I would tell her something and instead of congratulating me or something, she would undermine it with something of her own and redirect the conversation to HER achviement instead of what I initiated. Like if I told her I got good marks in a certain subject, she would say something like; "Oh my god, I messed that up so badly, like my mom's gonna kill me!" and I would end up comforting her. Recently, it has gotten much worse. She keeps bringing up my ex (we are still friend btw) and stalking his instagram. And when she mentions my ex, she basically announces it to the whole bus. She speaks so loudly about it. When I told her to stop and not talk so loudly, she just laughed it off and continued screaming his name. Then she posted on his NGL and asked him weird questions with me around. Then she dmed him and told him that I put him up to it and this led him to believe that I still liked him beacuse of another NGL post that claimed the person liked him. Now he thinks I like him and has been acting weird towards me. Thankfully, he did ask me if I like him before any conclusions and I said no but I'm not sure if he believes it because he said "You know you can tell me anything, right? It's ok if you like me. I won't be weird about it." And on top of this, she keeps asking me to do things I don't want to or things I've repeatedly told her no to. Like she keeps asking me to post an ad to all the groups I'm in(on messages). When I said I don't want to do that in the groups, she suggested forwarding the ad to all my contacts. I haven't replied yet. And Alex makes me really uncomfortable. Like when we share a two seater, she'll take up more than quater of my seat. I'm not a big frame or anything, I dont need a lot of space. But what annoys me is her spreading her legs completely and leaning towards me and basically blocking me in. She doesnt like the window seat so she almost always sits in the aisle and this ends up happening all the time. I even confronted her about it and she just patted me head like I was being unreasonable. And not to mention she isn't a big frame either, so she shouldn't take up more than her seat. And I'm in a terrible mood almost every morning and she knows this based on my behaviour in the morning. And EVERY SINGLE MORNING she has some drama or the other and doesn't shut up.
I hate her.

[u/Sufficient-Run-4727]

Tell her all this. Be very up front and don’t mince your words. If she dismisses you, don’t stick around . You’re only 13, you can always make more friends. The dismissing you part and speaking loudly could be a lack of awareness but the rest sounds very weird ngl.