“XO, Kitty” may have followed Anna Cathcart’s title character all the way to South Korea over the last few years, but she’s still the same love-obsessed girl we met in the “To All the Boys” trilogy.

“XO, Kitty” may have followed Anna Cathcart’s title character all the way to South Korea over the last few years, but she’s still the same love-obsessed girl we met in the “To All the Boys” trilogy.