Proceeding

Have you ever went blank in the middle of the conversation?
well i have the more evil version of the blank.
you see, when i approach a set + doing A1
everything goes well.
but then, when i need to continue to A2, I allways forget all the stack's.
so there I am near 2 beautiful girls, I can see that thay both are in to me,
but i have nothing to say...

Any idea what should i do?
BTW: I only approach about 2 sets a week, so it might be it...

hope for youre reply soon.
Qasker.