When spouses have each other’s back, it means that you can depend on each other and that you are looking out for each other. You are each looking out for each other’s needs and desires.
Each of your needs are being addressed more fully because there are two people looking out for you – your spouse and you – from two different perspectives and angles.
There is nothing more comforting than knowing that your spouse has you covered. In a way, this takes some pressure off yourself of always looking out for yourself. You know that when an idea is presented, you don’t have to hyper-vigilantly analyze it to make sure it takes your needs and wants into account; your spouse already has thought about your perspective too.
Of course, that means that you have to share your needs and wants so your spouse knows them and can take them into consideration.