Many romance series in anime give the best characters their well-deserved happily ever after. Finding true love and forming a strong, healthy relationship with a dream partner is the goal, and most romance anime protagonists accomplish it by the end. However, other characters in these romance anime series aren't so fortunate, and true love slips between their fingers.
Source:https://www.cbr.com/romance-anime-characters-who-still-need-love/