How do I tell my fiancé his friend needs to move out?

Okay so my fiancé’s friend moved in once we got our place so since about August, my fiancé told him for $100 (🙄🙄🙄) he could say there. Okay but $100 barely helps with our bills, electric is $300+ (depending on weather), gas is $40-$50, water/sewage is $90-$100, internet is $60. I told him last month that the bills needed spilt evenly amongst us & that his friend has to buy his own food, we receive $208 in FS for me, fiancé & our two kids, & I’m currently pregnant again! He has yet to buy his own food, eats our dinner every night & doesn’t pitch in. His friend is cool but I feel like I have another kid! He will leave shit laying around, leave a dirty dish sitting on the table when the sink is 4 feet away, always has people over even though my youngest has school, I’m always picking up trash he left laying around, doesn’t buy laundry soap or toilet paper or anything! So basically he’s living here for damn near nothing while my work is doubled! I feel like a house bitch for a man I’m not even with! I’m due in December/January & want my house back before my daughter gets here. He tries to tell us the kids need their asses whooped more often & more harshly because they don’t always listen, I don’t agree with physical punishment & I’ve said this multiple times! He doesn’t even see his kids but tells us how to raise ours.

How can I politely tell my fiancé he needs to have his friend move out within the next two months? Without coming off as a bitch? He was supposed to be here to get back on his feet but I feel like he’s just taking advantage of the situation.