Awareness of your stuff is necessary for you to be able to share your self with another person. It means that you’re in touch with the sensitivities you have to certain topics and behaviors. It also means when triggered by another person, you can acknowledge your sensitive areas without blaming the other person, avoiding the person or avoiding the situation altogether.
If you aren’t aware of your stuff, you are not likely to show much of yourself or take in much from the outside.
Tragically, couples that try to make things work without truly showing themselves are unlikely to succeed in talking though their differences. Their vitality is squashed and couples say things like I’ve lost that ‘in love’ feeling, I am bored, our fun is dull, we don’t have much in common,” I am lonely in this relationship and so on.