If you loved The Affair, try Affair in the Snow
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Yoshishige Yoshida, and they both carry the bittersweet, tender mood tags, and they sit in Drama / Romance territory. If that's the register that drew you to The Affair, the second film will land in a comparable space — through a different lens.
bittersweettender
What Affair in the Snow is
Yoshida appears to be aiming for Antonioni-esque alienation. A woman's trip to a snowy resort becomes complicated by her lover and an ex. It's a shame the mountain scenery outshines the people in it.

