Sincerity is necessary for friendships. But is it possible to be too truthful? The story below is an account of a loyal friend. The original poster (OP) had recently attended a friend's wedding. The bride and her boyfriend were quite close, so she got an invitation to the bachelorette party at Niagara Falls. During the bachelorette party, the bride complains about how she doesn't like one of the groom's closest female friends. The bride continues by saying that she would never have invited the…