If you do a tag search for the word "boundaries" or "boundary," and the phrases "boundary negotiation" and "boundary setting," you will find lots of threads on the topic, which will surely give you some insights.
The world opens up... when you do.
Oh, oh, can't you see? Love is the drug for me. ~Bryan Ferry
"Love is that condition in which another person's happiness is essential to your own." ~Robert Heinlein