Answer:
Short term memory.
Explanation:
Short term memory is part of our memory. Short term memory has a limited period to registered the memory-related event. The time duration is about thirty seconds. This memory has three concepts that are the limited capacity to store information that is 7-+2. This memory has a limited time duration and the third one is encoding.
Thus in the above context, when you introduced your dates to your friends before 10 minutes but now you want her attention but have forgotten her because of the limited period of short term memory.