Glad to help.
That's just weird that your mom is being weird about your boyfriend, when she has one! And honestly, and also bluntly, her boyfriend is the one more likely to end up with things that you should have.
Little story. My mom died, and I knew from a few years before (when they made up their wills and showed all the adult kids where things were, and explained it to us all) that each of them was leaving their money to the other. Then when the other one died, the money would be pooled and split 4 ways between me, my brother, and stepbrother/stepsister. That sounds fair, right?
However...stepdad got married less than 3 years after my mom died. And SHE has 2 grown kids. So....what's up with my mom's money? Is it all going to be pooled again with new wife's money, then split 6 ways? It's a mess. And stepdad is silent on the issue.
So really, she should be more concerned with getting her things in order rather than worrying about your boyfriend, especially if you are committed enough that you are going the road towards being official in this way...