I met my gf on facebook dating 3 almost 4 years ago.
We quickly connected chatted met up and had fun. We started to date and within a month or two we decided to move in together.

It was my idea, she was with a family member that was controlling, or so she said. I was staying on someones couch. Im starting to realize now, she must have felt that way because she never knew how to communicate her feelings and was always very polite and never really stuck up for herself.

Before we got serious, i told her I want an open relationship, I also said I needed her to improve her english as she was an international student and nothing is more important to me than communication.
She wasnt anywhere close to bad at english but she was good enough to where with a little improvement, she could speak english fluently, with some practice.

the problem is that never happened.

Everything that happens after this sentence I want to know, is it me being controlling? Or selfish? Or demanding, or do i have the right to want these things out of my supposed partner.

I think i started caring a little less every time i listened to her say something, and mess it up, saying she instead of he, or saying i want burger instead of i want *a* burger.

Little things like that seem to trigger me.
I knew this going into the relationship, which is why at the start of it i was so honest and blunt about it, but i dont think she respected it or thought it was a big deal.

Every time i talk to her she messes something up, and i get frustrated to the point where i make fun of her or call her names now because of how impatient or bothered i am.
Im not perfect or a saint, and i dont want to insult her, but at this point my patience is gone and i dont care as much as i sued to and im mentally trying to think of a way out but shes moved with me several times, our lives have improved dramatically, i have a way with words i can talk to her and she listens for the most part when it comes to certain things, but for other things she is a bit forgetful and stubborn.

I just dont know when enough is enough.
Im pretty broke, dont have savings, dont own a a home. she wanted to get married but i dont want to marry someone who i dont trust and cant really communicate with, thats another thing, trust.
I was going to end this post here but i will include this, she barely remembers what i say, its like im just talking her ear off and she just listens and nods but then forgets the next day or next week.

whenever theres an issue in the relationship, i try to talk to her about it, i try to tell her what or how im feeling and try to work with her on it, but i never feel like i get the same back. So im basically wondering why she hasnt left me especially since ive been a bit mean to her out of frustration,. even our sex life, she wasnt too experienced, i had to tell her how to do x y z and she never does,
I ask myself, is she forgetful? is it because of a bad memory, or because she doesnt care?
Well she remembers how to do things at work, and at home when friends or landlords ask her to, but for me, i have to struggle to get respect from her.

I want to leave, but i dont have a better alternative, i feel stuck.
Im not even saying that to point fingers or blame, it just doesnt feel right, if you asked me if i wanted to marry her id say no, if you asked me if i wanted to leave her id say no, if you asked me if i wanted to stay with her id say no.

I have no idea what to do. She doesnt have the same hobbies as me, she doesnt watch me play video games, or work on my projects like my motorcycle or repairing cell phones, she complains when i try to put on a tv show because weve watched almost every movie we can think of.

If youve gotten this far, and tell me this sounds like marriage, id want a divorce. i dont have peace with her, but were working on it, but if you ask me, its not good or fast enough.
Honest advice please, also, ive only focused on her, ive been a pos to her too plenty of times especially out of frustration, were both "stuck"