2018's To All the Boys I Loved Before felt like a fresh new rom-com for a younger generation. The cast was diverse, the attitudes were modern, but there was clear kinship with 80s romantic comedies. The movie played like an evolution of the genre for teens that are discovering rom-coms on Netflix, and Netflix got a popular rom-com to call its own. Now we've got the sequel To All the Boys: P.S. I Still Love You, which tries to dive into what happens after "happily ever after." The problem is that grey space is …