advice please!!!

Im dating my partner for almost 3 yers now. We deeply love each other and want to marry. I am living by the help of my boyfriend and selling food at the farmers market. I hav a broken family, depression and social anxiety that I am battling with.I am blessed wid an amazing partner who bought a home for us and initially we were going to marry and then live together. I was raised in a strict home and live in relationships are a complete no go for me. I feel like if i dnt move out soon i will really lose my head. I am at my wits end now.

I feel so ashamed to live widout being married but i really cant take it anymore. Also my boyfriends mother doesn want us to live togther. She is an old fashioned woman and told my bf straight up shes nt happi wid it. He doesn care what she says and still taking me away. Give me some advice please? What do i do?