Barney Stinson could never seem to settle down in a relationship. And his love interests in How I Met Your Mother were played by quite a few celebrities. Barney Stinson, played by Neil Patrick Harris, was terrified of commitments. So he pulls up elaborate plays from his book to impress women throughout the series. Yes, there were times when he entered long-term relationships, but those did not last long either. In any case, it was fun to watch the unique stars who played his love interest throughout the show. Here are 14 of Barney's ex-girlfriends whose real-life careers are as interesting as their roles in How I Met Your Mother.