Actually I think is a "coded-message":
a) I'm worried because you are still at home.
b) I'm worried because you spend too much time online ("get a RL")
so, with inverse-psycology language she said:
"Go live with him". That is a mixed up of "Why don't you want to live on your own" and "I'm worried because you spend so much time with him".
She doesn't mean to be direct. Actually I hate inverse-psycology, never worked with me.
The person in question was actually a woman. Mom would NEVER suggest I go live with a guy. In fact when I told her that the person I was talking to LIVED with her boyfriend, that was the end of that discussion.