When could love possibly not be enough?
There is, of course, that star-crossed motif Shakespeare pulled out of medieval Italian lore.
This, too, can be very romantic. (See Romeo and Juliet ref. above.) It will certainly elicit sighs and tears.
The very sappy and enduring Love Story and its sequel Oliver’s Story are possibly exemplars of the sadly romantic in film.
Terms of Endearment, on our previous rom-com list, has a component of loss, and actually fits this list better. Place it next to Steel Magnolias as a hearty instance of romantic but sorrowful.
Of course, these two and the previous ones are not strictly in the mode of star-crossed, but rather love found and lost (the.. Story pix) or love tinged with tragedy (Terms.. and Steel.. .)
In a more light-hearted vein in which love is a stage and is
intentionally given up, we have (among others, of course), the superb and memorable Dirty Dancing. In this genre of rom-com, love is not so much meant to be, or a cosmically missed experience. Instead, it is a fond memory.