help. I need advice!

I am 17 and my boyfriend is almost 22. We have known each other since we were little kids (I had a huge crush on him). Well we didn't really talk at all but our sisters were best friends. When he turned 17 he joined the Marine Corps and got deployed a few different times. He got married to a girl while he was stationed in Hawaii and she cheated weeks after he got deployed. He found out while he was gone and told her to leave their house before he got back. She did and they are in the process of a divorce. My mom did NOT like the idea of us dating because of him being married and his age, but we reconnected because he is stationed close to our home town and fell in love. (I see him twice a month or more). Well... his mom is such a jealous bitch!! She has gone as far as to call me a hoe and a whore.... she is always being mean to me when I am around her which is really rare... I have done NOTHING to her.. his whole family loves me except her. She talks crap about me 24/7. My mom is always bitching at me about everything. I'm 17, with 2 jobs, all honors classes, & I'll have my CNA certification before I'm even out of high school.... should I move in with him once I graduate and do school online? Or stay at home and go to a local college? (I'll be in college for 12 years because I'm planning to obtain my anesthesiology degree) What do I do about his mom? HELP 😭