[@Themerlinhawk]
So how emotional do you think would be too emotional 
I'm thinking he has a sort of kindness but he is still fully willing to kill without it impacting him
Maybe a sense of humor in the form of sarcasm.

The next thing would be how would that type of relationship start...but that's more of a me needing to ponder for a bit....hmm
Perhaps he got curious and like a stray cat never left
But that might not really fit
Hm
Definitly pondering that one.