I know one thing: Stark's bed would be 500% fluffier, for him, if Fern was sleeping next to him. I'm not sure about how Fern would experience it, though, since Stark ought to be all hard muscle and little else.
Well eventually Stark will conquer his fears and do it... But maybe Fern will make him do it, let's be real their first time it's really gonna be awkward for both Stark nervous and fearfull of using too much strenght which will piss off Fern uncontained lust...