Often, there's a plotline about the two of them facing challenges together. Maybe they have to fight off other threats in the alien environment. There might also be a part where the male human has to prove himself worthy to the female yautja's clan. This could involve him showing his courage or resourcefulness in a difficult situation.
A common plot element could be the development of a romantic or at least a very close relationship. They start from being strangers, perhaps even enemies at first sight, but as they spend more time together, they begin to care for each other. This can include small moments of kindness and shared experiences that gradually build their connection.