In the X-Files episode "Triangle," Mulder goes looking for a ghost ship in the Bermuda Triangle. He finds it and time travels back to 1939, where the ship is sailing through the Caribbean, populated by Nazis, famous scientists, and the like.
Of course, these people are all represented by characters like Skinner, the Cigarette-Smoking Man, and Scully herself.
Mulder figures out a way to save the future and enlists the help of the Scully character to turn the boat around. He tells her what to do, gives her a big, goodbye kiss, she slaps him (hard), and he dives into the ocean to save history.
So I was thinking today--who else is going to find himself trapped on a water vehicle with a ghost?
Now, I'm pretty sure we're not going to get a kiss in this episode, but I think a declaration of love probably isn't out of the question. I wouldn't be surprised to see Booth either:
A. Tell Teddy Parker that he loves Brennan.
B. Tell Brennan that he loves Brennan.
C. All of the above.
An important distinction is that this would be a declaration of love, not in love. Not that the latter isn't true, I just wouldn't expect Booth to put that out there quite yet, and definitely not to Brennan.
Here's the clip of 1998 Mulder telling 1998 Scully that he loves her. (Also, I feel old.)