I haven't read the books so, uhm, this got me a bit confused. Claire is to mary Jamie, and she doesn't seem to excited about it (y' know, with wanting to go back home and such), but the promo shows them doing the sex. I mean, I don't get that. Jamie knows they're only getting married to keep her out of the dirty hands of Randall (creep!).. Can I interpret it as Claire being in love with Jamie, but she doesn't want to admit it? We all know he is mad about her. Ugh, they got my head spinning!
Well marriage laws as they were back then dictated that no marriage was legally binding until it had been consummated (otherwise it could be annulled). That’s why royalty and certain aristocracy had witnesses in the bed chamber on wedding nights. In this case, Dougal and his men will be waiting downstairs tying to listen in to make sure Jamie seals the deal (so to speak).
In the book they have about two weeks before she has to brought back to the garrison ( a luxury they dont have in the series) , so Jamie tells her they don’t have to have sex if she’s still upset about the forced marriage thing but she chooses to sleep with him and its largely because he is super damn fine and she is very sexually attracted to him - I don’t think she’s by any means in love with him yet, she’s fond of him and he is very attractive and she’s married to him so she just goes for it.
I think this is one of those cases where the shows exaggerated emphasis on frank and frank/claire kind of jars with where the story is going, in the book shes more focused on just day to day survival (not having frank flashbacks at the drop of the hat) so its a lot easier to believe that she would choose to build a relationship with jamie.