I have gone about this all the wrong end up, but to return to kind of the start, I thought this person described the situation fairly well:
Really love George Blagden after finishing watching Versailles so then I go to see Vikings.
Nothing serious.
Just some casual funs.
AND THEN I GET REALLY ATTACHED TO THOSE CHARACTERS AND ATHELSTAN AND ATHELNAR AND WHAT THE HELL HAPPENED I HAVE BEEN CRYING OVER THAT SWEET CHRISTIAN FOR LIKE A WEEK.
As expressed by
weeeeet on Tumblr.