There is concept of eletron-eletron repulsion. When two eletrons are too close, they repel each other. This results from electrostatic force.

Same way, your partner and you will have fights and/or arguments because you both are too close. Close enough to invade each others me space.

This happens because there is stress, another word for force, in the situation.

Either you both will repel enough to get out of me space or the me space will srink establishing new borders.

Care must be taken to ensure no additional force is allowed otherwise the risk of bond breaking under stress imply.