I'm HOPING that Sophia being eeeeeeevil nullifies any validity of her statement- at the end of the day, Beckett should realize she and Castle haven't been doing this for a few months, they've been at this for years and if she thinks all that's between them is tension, she doesn't think very highly of him given his declaration to her last season.
(this isn't a disagreement, I swear, lol, I agree Castle/Sophia is stupid, just a hopeful different perspective on the intention)
In other news...
I actually liked this episode- provided it really is the end. Because HIMYM writers, as a Ted fan who actually IS invested in his journey, I am out. I am just out of patience, out of emotion, out of even frustration. They are DONE. She doesn't love him. She was not lying. That is the end of the road. I can't handle Ted ever going back for more after this. I will stop watching if they try this one more time.
May the force be with her.