Marriage is three parts.
Commitment
Friendship
procreate
If you do not give 100% of yourself to it then you have issues to work on.
Funny how people want to describe what marriage is. All you have to worry about is what God calls marriage. Its in the Bible.
Mutual aid is a secondary purpose of Holy Matrimony.
Friendship would be something that should grow in marriage that most likely would have already been there.