Well, that solved the conversation starting issue.
"Yes, I... We met, about two years ago, in a dream of sorts..." This was surprisingly difficult to explain since Aqua didn't seem to already know. "...In the subconscious of the construct whom you and Terra created to hold the First Darkness." She looked at Aqua a little helplessly, wondering if any of her words made sense to the knight. Memory issues were an absolute headache.