Quote from Ted in A Change of Heart
Barney: Ted? Ted: Go ahead. Give me your best. My life's an open book. Barney: The ballet class. Ted: I once took a ballet class. Not ashamed. Barney: The 'N Sync concert. Ted: 1998. Cleveland's Gund Arena, front row. Caught JC's shirt. What else you got? Barney: Okay, Ted. The thermos. Ted: I suppose it's possible Barney has real feelings for Nora.