when i talk about space "space" I'm speaking of that space over which you have control. it includes your feelings, thought, and action.
Your space is you … not just tangible body, but the you that lives and interacts with others.
in any relationship it is possible to think of my space, your space, and that space which we share together- "our space"
If one of the principals of building better relationship is to avoid "intruding" we could also state that truth in this way " stay out of another person space until you are invited into that space", this does not mean completely staying off, it means that equal times is allocated to both parties, for those time you will wish to be alone or just want to stay off for a while and think things true.
when there is no space in a relationship, both parities involved tend to get tired of each other especially in their early stage of relationship.