Marasi and Wax both have a lot in common. They're both logical, they're both dedicated to their work, and they both have a strong sense of justice. It's not surprising that they would be drawn to each other. However, it's not clear if they'll end up together.
There are several factors that could keep them apart. For one thing, Marasi is still grieving for her husband, who died shortly before she met Wax. She's not ready to move on from him yet, and Wax respects that. Additionally, Marasi is very independent and doesn't necessarily want or need a partner right now. And finally, there's the fact that Marasi is a lawkeeper and Wax is an outlaw; their worlds are quite different and it would be difficult for them to find common ground.
That said, there's also plenty of evidence that Marasi and Wax could end up together. They clearly care for each other deeply, they share many values and goals, and they're attracted to each other physically as well as intellectually. Only time will tell what will happen between these two complex characters.