[quote=@Crawkid]
It could be the priestess tries to teach the assassin a better way of thinking, or maybe the assassin thinks the priestess is too naive.
[/quote]

^Part One

[quote=@Crawkid]
Or maybe he is charmed by the more peaceful life and wants to keep the temple protected
[/quote]

^Part Two

[quote=@Crawkid]
Or maybe some threat is lurking and he will teach the temple priestess how to fight it
[/quote]

^Part 3

You basically just plopped out the whole story arc, we can do all three!