Boyfriend pressuring me into marriage after 6 months

He says to not work or get a career and let him take care of my 4 kids and I (he’s not their father) so I’m like no I have 4 kids I especially should have a career no matter how much money you have. He’s like no we need to get married and you be a stay at home mom. I said no cause what if it don’t work? He’s like ima make sure it work I’m never divorcing no matter what. Ugh that just made me kinda lose feelings for him lol