Ben Lister was a serving officer with West Yorkshire Police when it is alleged he sexually assaulted the woman after a night out.
Bradford court heard Lister had given the woman a 'peck on the lips' in the Acapulco nightclub, Halifax, West Yorkshire, earlier in the evening of August 29, 2016.
But the woman told a friend who was out with them: 'He's not my type. He is too old for me.'

The woman, who cannot be identified for legal reasons, said: 'She told me he had a girlfriend. I was scared because he was old. I was just in shock.'
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