The singer is clearly a bit uncomfortable at the line of questioning, but how can you be mad when it's Ellen doing the asking?!
Entertainment Tonight summed up a piece of the exchange:
"It's weird because, I get nervous when you talk to me about him," she admitted. "I don't know why, but for some reason, the cameras are rolling and I shouldn't say something. So if I say, 'We are [getting married],' then we are, and if I say, 'No, we're not,' then that would be sad, too."