Books that combine the feeling of yearning/falling in love for the first time but between two people who have been in a relationship/marriage for a long time

I'm looking for something that combines Normal People sort of yearning heart ache, but would love to see it explored in people trying to re-find that feeling in a relationship the two characters have been in for 5-10+ years. I've seen it in films like After Midnight but have yet to come across a book that makes me feel fuzzy and sad and hopeful all together.