Unfortunately I still live with my parents so that is mission impossible for now .
How did you sleep over with your former boyfriend then?
I totally get wanting your space to sleep. I also get wanting to be in your own home.
Some people like to sleep with someone else, others prefer to sleep alone.
Just as you told us, tell him. You weren't rude at all telling us why.
If he doesn't respect that, perhaps he isn't someone for you.