Before watching the movie:
I’ve gotten the idea that this movie is kind of horror-drama about a stalker. Glenn Close’s character is obsessed with Michael Douglas and ruining his life in the name of “love”. The greatest insight I’ve seen into it is an episode of Family Matters where a character sees that Steve Urkel’s girlfriend’s bedroom is wallpapered with pictures of Steve and comments “You should rent Fatal Attraction. It’s about you.”
My description makes it sound more like Misery, but that’s all about a fan keeping an author captive, while I don’t think there’s captivity here, except maybe using the man’s family as hostages or something. This might have an element of action, which Misery wouldn’t.