I think that if the Glee writers are smart, they'll expand on it in coming episodes. That's how they developed such a strong fanbase for (and against) Finchel. Right now, you either LOVE Santana/Brittany or are ambivalent. They need to make people love Santana/Brittany the same way they do Finchel if we're supposed to take it seriously as one of the show's major relationship arcs. So far this season, they haven't made any of the "ships" that strong. For Britana's sake, I hope that they don't just drop the plotline!