Relational dialectics is the junction of relation of the indivual person together. This theory focuses the opposing disagreement ot denial in a relationship which consist in many ways. The concept of this theory in philosophicl is it mirrors the problem and struggles of two people or various people in relationship.
Example, you met a new person on your class which happen that it was a transferee. He was nice, jolly, kind and generous person, since, you always been a sitmate to him in class, you are easily attached with each other. From time to time, the closeness of your relationship comes into many struggles as well, the closeness before is different from now because over time, you know more with each other and there you know the true nature of each other. From best friends before to a civil friendship now.
Therefore, in the situation there is a pressure in the relationship you build, the possibility of the relational dialectics would be contentment or separateness of the said relationship. But, if it is toxic sometimes, it is better to give up or to let go of it.
Communication Theory 