I always found this moment a bit awkward in Poof! You’re Dead (3x12). But this time around, I found myself thinking that maybe this is the moment for Castle, where he realizes that Beckett is it for him, that he needs to break up with Gina because he knows their relationship will never compare even to small moments like this with Beckett. This is where the magic of their relationship starts. And Castle realizes that what he wants is right in front of him.
This is exactly what this moment is. It’s the moment that he realizes that the kind of magic he is looking for, that the magic that he doesn’t have with Gina is right there with Beckett.
You’re having sex.
Castle Season 7? (2/11)
"Castle and Beckett stand out for a reason: they click in the bedroom and at the crime scene." (x)