bestfriend dating bestfriend?

Have any of you ever had a friend, who decided to date another one of your very good friends? I'm sure quite a few of you have. My best friend and next door neighbor has dated several of my guy friends over the past few years. Its come to a point where its awkward to go to the bars with all of them because she has broken up, or been broken up with several of the people in our group! It also seems like I am stuck inbetween a rock and a hard place when things go south. Giving advice to one person, then giving the opposite advice to the other! AH! Am I the only one who has dealt with this?