This about sums it up.

Jin is the cause of all of Kame's joys and misery.

Only sometimes I don't like to give Jin so much credit. Lol. My conflicted feelings about them.

Jin realized that what they had between them was not romance, not love, not mere affections one have for the person he treasured most. What they probably have between them was much deeper, much more destructive, and much, much harder to forsake

I love this line.