Space really means the level of awareness or presence, not thinking. So, can you look at your partner and not think? Two conscious beings realize that the essence of the relationship is the space in it. Even when there is an egoic overlay, it is not too dense or heavy for you to sense the essence underneath it. You don't need to react to the egoic overlay. When you don't react to it you don't strengthen it.

If you walk into a forest - you hear all kinds of subtle sounds - but underneath there is an all pervasive silence.

Enlightenment means rising above thought, not falling back to a level below thought, the level of an animal or a plant. In the enlightened state, you still use your thinking mind when needed, but in a much more focused and effective way than before.

The more you make your thoughts and beliefs into your identity, the more cut off you are from the spiritual dimension within yourself.

...the relationship is here to make you conscious instead of happy.

The Truth is far more all-encompassing than the mind could ever comprehend. No thought can encapsulate the Truth. At best, it can point to it. For example, it can say: "All things are intrinsically one (The Pearl of Great Price)." That is a pointer, not an explanation. Understanding these words means feeling deep within you the truth to which they point.

Whatever the ego seeks and gets attached to are substitutes for the Being that it cannot feel.