Does one second lip touching count as kiss?

Lets say A is a girl and she was talking to her boyfriend when suddenly her boyfriend move his face forward and touch her lips with his lips. But it was only for one second and after that the boy didn't give any reaction at all and continue to listen to the girl talking. Because the girl was shocked, she didn't ask any question and just continue the talks and now keep wondering if that was a kiss or not. So what do you guys said?
Does one second lip touching count as kiss?
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