To add on to my previous post, I'm scared my son will feel replaced. Not only that my living…

To add on to my previous post, I'm scared my son will feel replaced. Not only that my living situation is THEE WORST! I may have to suck it up and move in with my SO. I just didn't like the thought of "playing house", and he doesn't really want to live together until we're married, but I can't stay where I am. I had to move back in with my mom which I wasn't happy about at all, she has a tiny two bedroom house. My son is in my room with me, then my cousin decided to move in and he sleeps on the couch and is beyond nasty. Then I have another cousin that stays over here every time his mom kicks him out the house. Bringing another child over here definitely will not work