Another theme could be self - discovery. As the story progresses, the characters might learn more about themselves, their desires, and their limits, which is often intertwined with their relationship journey.
One option is to write a review. By writing a review, we can better organize our thoughts about the novel and also recommend it to others. Another thing we can do is to look for other novels by the same author. Since we already liked one of their works, chances are we'll like their other books too.
In 'After We Fell', Tessa and Hardin are still very much in love but face numerous challenges. Tessa's career aspirations start to collide with her relationship. Hardin, on the other hand, is haunted by his family history. There are misunderstandings, emotional outbursts, and revelations that keep the plot going. It's a story about two young people trying to make their relationship work in the face of many odds.
Love and trust are major themes. Tessa and Hardin's love is put to the test, and trust is constantly an issue as they uncover more about each other's pasts.
I haven't actually read this novel specifically, but generally in post - apocalyptic novels like this, the main plot might revolve around the survivors trying to rebuild society, deal with scarce resources, and face new threats that emerged after the world's fall.
I'm not sure as I haven't read it. But typically, in post - apocalyptic novels, there could be a strong and resourceful leader figure. Maybe a character who was an ordinary person before the world fell but has risen to the occasion to lead others.