What is autism level 2?

I assume you mean Adult Autism? It is difficult finding adult relationships, but in my experience the simplest way is A. Find your tribe. It's easier to form relationships with people who share your interests and life experiences. They don't have to have Autism, but they should be able to appreciate your hyperfixations and other opinions so they can get to know you better. This leads to easier romantic affiliation as well as platonic. B. Communication. This is actually the scarier part. Once you get the relationship, you have you learn to be ok with sharing your feelings and explaining them the best you can. Not everyone can pick up on your cues. Not everyone will understand why you're upset. And both of those things are ok because you won't always pick those things up either. Establish this rule with your partner early so they know that they're going to need to explain things to you too. Most importantly, if the communication patterns clash, it is okay to call it quits if you feel like trying to work on it does more harm than good. If not, keep trying. This is gonna be hard. But not impossible. Be ready for trial and error. Learn from mistakes.

In that case, I don't think this is necessarily a problem with your disorder. This sounds like an ordinary relationship problem. Two years is a long time to refuse compromise with a partner. I don't know you or your partner's life, but it sounds like this relationship isn't working out. Refusing compromise, especially when one partner is struggling with something they can't control isn't healthy. I won't tell you to break up because I don't know the whole situation, but I would suggest weighing your options. If you want to discuss this privately, message me and I'll be available.