When looking for a new mate, it seems that we always look for some one who is like us. We want someone with similar interests and similar views. We want someone who likes the same things that we like and dislikes the same things that we dislike. In short, a best friend.
But, as the old saying goes, opposites attract. Or more to the point, if you both are identical, then one of you is not needed. Each of you needs to bring something unique to the relationship.
For example, you both may be used to managing the house hold budget, but as a couple, only one of you can do it. If you both try to do it, there will be conflict. So, in this area, one of you is not needed.
What this is getting at is that you both need to bring something unique to the relationship. If you can’t, then you are not needed.