I believe your essay basically answers your own questions. Don't marry the guy, OP. Not because you are afraid of marriage, but because he sounds like an unsupportive piece of shit. Sounds like he doesn't care much for you.
Leave him, be yourself. Flourish! You'll find the right person eventually, one that makes you feel beautifull, wanted and apreceated for who you are.
Stop sending her money
I believe your essay basically answers your own questions. Don't marry the guy, OP. Not because you are afraid of marriage, but because he sounds like an unsupportive piece of shit. Sounds like he doesn't care much for you.
Leave him, be yourself. Flourish! You'll find the right person eventually, one that makes you feel beautifull, wanted and apreceated for who you are.