10. Dan Marino's Secret Love Child Revealed 

Football legend Dan Marino this January admitted to having an extramarital affair that resulted in the birth of a daughter in 2005. The former Miami Dolphins' quarterback – who has enjoyed a successful post-football career as a TV sports analyst – is said to have fathered the love child with Donna Savattere, a CBS Sports employee.{relatedarticles}Marino was married at the time of the affair and has said in statements that the revelation is a private matter and would not affect his long-time marriage.  

With more time left on the calendar for 2013, there's no telling what shocking celebrity scandals will unfold as the year progresses.