By brain is so twisted that it can make links between things where people with normal brains wouldn't see the links :versu:
I don't really stand much still with manga-pairing as they don't contribute much to the story and not much attention is given to it either. I mean we had 2 confessions so far, but none had any result or even a reaction >.>
I don't really see Kakashi having any interest at all in marrying, though if it would be I would say Samui just because it would be so Kakashi-like. I mean he hasn't shown any interest in Kurenai, Anko or any other woman and I find Samui the Kakashi of Kumo, so I just find it logical that if Kakashi would marry someone, it would be her.