Two people have broken their friendship ties because of either a disagreement or he or she has found out that his/her boyfriend/girlfriend had an affair with his or her best friend of one too many years. This type of betrayal has taken its toll on all people since day one. It seems that this friendship wasn't enough for him or her, especially when this guy chose this girl over her best friend and this girl has chosen this guy over his best friend. Why these people aren't best of friends anymore is because for one, his girlfriend or her boyfriend cheated on him or her with his or her best friend and for two, they've gotten themselves in a lot of compromised situations. It breaks the hearts of every human being just thinking about it. He or she, of all people, should know that they've been the best of friends since kindergarten and/or elementary school. So now that these people are no longer friends, thereby being "ex-best friends," I guess he or she has no choice but to move on with their lives. These people have broken ties from each other, eventually trying to rebuild them. But even if he or she has betrayed his or her best friend, one should be seriously forgiven for all the misdeeds he or she's done: trying to take his or her girlfriend or boyfriend, leaving him or her hanging, everything. These two people are best friends and they're all they've got. But the sad thing about two people being ex-best friends is that not only are they not talking to each other anymore, they've humiliated each other publicly and personally. So, if that's the way these two people want it and they want to cut off communication with each other, well, then two ex-best friends (guys and girls) have no choice but to wish them the best of luck and hoping that they'd forgive each other in the near future.