It was a moment of weakness...

You were the youngest of all the recruits so of course he had to make sure you were well trained but watching you flourish...you reminded him so much of Isabel...someone he genuinely missed. He subconsciously clung tighter to you.

And with that he begun to see you as someone to watch over. So he got more and more curious about you and then that curiosity turned into fascination then silent concern and lastly it became deeply protective...