The most heartbreaking interpretation is that neither person is actually wrong. They simply encounter each other before they have become the versions of themselves capable of making the relationship work. That’s a much harder tragedy to solve than villains, misunderstandings, or lack of love.
he relationship isn’t presented as a cure for instability. Instead, it works only after each person has already done their own work. That’s a more mature idea than the common trope of two broken people fixing one another.