Before watching the movie:
It occurs to me that “Time travel romance” is rather an oddball genre. I can think of two or three other examples (Assuming The Lake House counts), but it still seems more common than it ought to be, though less than it could be.
This movie somehow reminds me of Time After Time, even though the premise is almost entirely opposite. This is a modern person going back in time for love, the other is about a Victorian coming to the present and finding love accidentally.
Oddly, my conception of Christopher Reeve’s acting style is less from Superman and more from Noises Off! There may be more Superman, but I’ve seen Noises Off! more frequently.