Well, there wasn't much of a choice. The dinner was presented and the were both feuding at the table. Ragnar is Earl now... I really believe he does love Lagertah more than Kwenthrith. Lagertah helped him to get where he is. She fought in battle with him... its just that he is so concerned with male heirs, he went through any cost to get them. I believe him when he says he does not love Kwenthrith... but she does have a lot to offer to his clan. I'm interest to see Siggy's schemes... I'm not sure why she is sticking with Rollo. Her beauty could capture anyone within the group.
I'm also interested to see if Bjorn paid off the Lawgiver with that coin. What was his motive to corrupt the ruling on Rollo?