Me f29 him m28 together for 7 years. Sex life ok but room for improvement.

Exactly one year ago my SO registered to finish his Master thesis. He will finish this summer. We always planned to marry once he has his Masters as he is eligible for a very nice sum during his studies if not married/in a Life-Companionship.

I always thought he would propose with a few months to spare, setting up a wedding takes time even if we just sign the papers.
During Fall I was hopeful. My Family got excited for Christmas season. No ring, nothing. His Family got excited for February. No, nothing happened. In March he got the good news he has passed the thesis and just needs to do the oral exam. Unless he totally flunks it he has his Masters safe.

His mother and I talked about rings. I confessed my love for amethyst. She asked me what is going on - I told her about my hopes and she told me she does not understand him. He supposedly loves me so much and we talked about marriage years ago. (7 year relationship, our anniversary was in December)

I work on a freelance basis and do my dissertation, he has a job that pays well but is 2/3rd Time.
Our sex life suffered through his thesis as he turned into a night owl. I always prepared breakfast for him. I also made sure to make him feel welcome in my flat (we live in my flat mostly, as his is tiny and I have a flat that within walking distance to the campus and has a balcony). We wanted to search a flat for US once engaged…

My Mother advised me to stop playing wife for him. Let him buy the cow first and all that. That was 6 months ago. I stopped making breakfast or welcoming him home as a king. I got involved in new hobbies and spend the days becoming amazing. I am currently cleaning up my eating and lost 2kg already. I still love him but my brain says I am wasting my time…

His brother was against me from the get go. He foolishly thought I had a thing for industrial workers and only that made me fall for my SO. Coupled with his assumption I would be a gold digger. Yes, SO working a blue collar job and doing secondary schooling to attend university made me proud of him - but that has nothing to do with me being a gold digger or just loving him for his former job. Maybe his brother put thoughts into his head?

I tried to talk with my SO but he told me to stop asking. Without explanation and just that. He tells me he loves me, wants to start a life together…

I know I am not perfect. But no one is and I am very much doing my best.