It's everyone's biggest fear: going in for a kiss only to be snubbed by an unenthusiastic recipient.
As he swooped in, she recoiled. Or at least that's how it looked.
When asked whether his wife, who has since joked about the awkward moment, had reacted to his bad breath or a poor kissing technique, Ed replied: "she’s never complained."
Still, we thought it was only fair to give the Labour leader - and countless other kissing novices - a few pointers when it comes to locking lips.