The main thing about not getting well is because botht he people. i.e. best friend and the Partner loves us and do not want to share us. The main reason being insecurity about themselves and its position in our life. SO ONLY THING WE NEED TO DO IS REMOVE THIS INSECURITY ANG GIVE THEM BOTH ASSURANCE OF THEIR PLACE IN OUR LIFE. I think it can be overcome..Best friend and the partner has our interest at our heart.and once they become sure of other, they will get along with each other.