A = Ante = beforeAM ante Meridian, befor the meridian = before the Sun passes the meridian (due south form your locaion)
It is another way of answering yes to a question.
they just want some attention by you so theey can have fun
time to time is a common saying meaning now and then or sometimes
it means they have no time to do what you want to do so they say anytime when they dont plan on doing it at all