Okay this is cannon.

SASHA PRESPECTIVE

Sasha and Connie get along well as teammates and as friends. The pair often make jokes, as they enjoy each other's company. As trainees, they frequently got in trouble together. In spite of that, they defend each other if need be.

CONNIE PRESPECTIVE

Connie and Sasha are very close friends. Even though they often get into trouble together and provide much of the comic relief of the series, they care for and protect each other when the situation calls for it.

THERE NOT MUCH TO EXPLAIN ABOUT THEM AND IT IS UNNESECCARY BECAUSE IT IS CANON IN THE AOT AND THE SHIP IS LIKED BY A EVERY AOT FUN.

COMMMMMMMMEEEEENNNNTTTT!!!!!!!!!!!!!!!