Romance. It's a very common term used interchangeably with love story. A romance can involve the development of a relationship between two people, with elements like love, passion, and sometimes obstacles that the lovers have to overcome.
Well, 'noticed' is another word for'seen'. When it comes to 'novel', 'original' is a great alternative. The word'seen' implies the act of visually perceiving something, and 'noticed' has a similar meaning but might imply a bit more of an awareness. 'Novel' means new and different, and 'original' also gives the sense of being new and not a copy.
Emotional depth. A story like this will usually have characters with deep emotions. Take 'Atonement' for instance. The love between the main characters is filled with regret, longing, and a sense of loss that gives the story great emotional depth.
It could mean a love story told in a different way or using different words. Maybe it's a love story that doesn't use the typical 'love' language but still conveys the deep emotions of love through other means, like actions or unique descriptions.
One example could be a story set in a small village. The two main characters have a special bond that is shown through their shared memories and the way they look out for one another's families. They don't say 'I love you' but they have a silent understanding. Their relationship grows as they work together on community projects. It's like a love story that uses the concept of community and mutual respect as a substitute for the direct mention of love.