Yes, 'Me Before You' is somewhat similar. It explores the relationship between two very different people and how they change each other's lives. The emotional journey of the characters is a key aspect, just like in 'Listen to the Marriage'.
One more is 'The Rosie Project'. The protagonist's journey in finding love and dealing with unexpected emotions in a relationship can be compared to the relationship development in 'Listen to the Marriage'. In both, there are unique characters with their own quirks coming together in a relationship.
You could also consider 'Outlander'. It has a complex relationship at its core. The characters face various challenges and their relationship deepens over time, which is similar to the relationship development in 'Listen to the Marriage'. The historical backdrop in 'Outlander' adds an extra layer of depth to the relationship story.
Chapter 81, "Each Harboring Their Own Schemes", is the clearest early answer because it turns Bradford's situation into a concrete plot event. Early on, Norris and Bradford, these two men who used to call the shots within.... By the end, And what remained was the question of how to survive.. Inside the broader technology upgrade storyline, the chapter exposes hidden motives around battle, so readers can finally see how the conspiracy layer of the plot is actually moving.
Chapter 8, ", The True Salvation", is the clearest early answer because it turns Abandoned Cave Society's situation into a concrete plot event. It opens with Although Gu Hang's arrival was unexpected and no grand welcoming... and closes on You need the ability to protect yourselves, and I will arm you.. The key payoff is that it turns faction conflict's growth into a concrete upgrade step and sets up the next payoff in the power growth storyline linked to Gu Hang.
Chapter 121, ", Terror Engulfs", is the clearest early answer because it turns Lambert's situation into a concrete plot event. The chapter turns that into something concrete by moving from In the midst of that terrifying storm, the Inner City was certainly... to No wonder the whole city is talking about you like this." "They....
Chapter 43, ", come out quickly", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. It opens with The battle intensified in an instant. and closes on A few more shots, and it would destroy not just the trees but also.... The key payoff is that the chapter closes with "The mindless monsters have drawn the vast majority of my soldiers' firepower.
Chapter 129, ", Decree by Proclamation", is the clearest early answer because it turns Osenia's situation into a concrete plot event. Early on, Medicine is a hard currency in the wasteland, and there are few.... By the end, After carefully listening to Osenia's report, Gu Hang approved her.... Inside the broader faction conflict storyline, the chapter closes with Even, there's some surplus., which gives the main cast a stronger narrative position and pushes the power growth onward.
Chapter 71, ", Life is the Coin of the Emperor", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. It opens with If Gu Hang knew Mondok's thoughts, he'd surely laugh: I just need to... and closes on The difference between the two was quite significant..
Chapter 84, ", An Epic Victory", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The chapter gives readers a real answer by opening on Bradford's initial answers did indeed leave Gu Hang unsatisfied, but... and ending on This was even higher than the profits from the previous ambush.... In story terms, the danger stops being abstract and the conflict around An Epic Victory becomes immediate, forcing the surrounding cast to react under pressure.
Chapter 161, "The Meaning of Life", is the clearest early answer because it turns Lacroix's situation into a concrete plot event. It opens with They knew that it seemed like war had already broken out. and closes on He then remembered that he had not yet reported his rank: "I....
Chapter 96, ", The Wind Rises", is the clearest early answer because it turns Osenia's situation into a concrete plot event. The chapter turns that into something concrete by moving from The 3rd Battalion of the Governor's Infantry Regiment will be... to It was likely to spark a riot on the spot!.
Chapter 53, ", The Second Governor General", is the clearest early answer because it turns Gu Hang's situation into a concrete plot event. The setup is He stepped forward and gave Lambert a big hug, "I'm willing to trust..., but the pressure keeps building through After all, the guy brought a group of people with him, surrendered....