Article continues below advertisementThe drama surrounding Robert F. Kennedy Jr. and his digital affair with Olivia Nuzzi keeps growing - and now, one of Nuzzi's most high-profile exes is chiming in. Former MSNBC host Keith Olbermann threw himself into the conversation after new allegations surfaced about the political reporter's past relationships.Article continues below advertisementSource: MEGA;@olivianuzz/InstagramKeith Olbermann reacted online to new claims about Olivia Nuzzi's past.