The idea of a healthy relationship is that you form a team together, and get through life together, having fun, having a deep bond, having romance, having a family, supporting each others career. Once you are infatuated with each other, both need to have the bravery to show the other their flaws, weaknesses or insecurities. This must be very scary, as I myself haven't ever experienced it.

At first, you need to show your best to acquire the highest value mate. Then, you need to change strategy at some point, and show your worst. If you never do, you cannot help and support each other and that was the whole point of having a relationship in the first place.