The good thing is that they had no children!

I was listening to Steve Harvey the other morning and on the Strawberry letter portion of the show, there was some discussion about a man and woman who were husband and wife and best friends.  They were the ideal, perfect couple to everyone around them.  I forget how they found out, but they learned that they were brother and sister!  The father was a rolling stone and had two baby mamas on either side of town.  The good thing is that they had no children, but goodness.  Any suggestions for how to get over a breakup with your sibling?  Ew.