A couple who stayed married for 50 years after marrying on the night they met, even though the husband was told he only had two years to live. Essential Storyline Elements

To create a compelling romantic arc, writers often follow these "obligatory moments":

If you are looking for fictional inspiration or story ideas:

A husband who grew out his hair to make a wig for his wife during her cancer treatments.

A high-stakes trope where characters fear losing their friendship by "taking it to the next level".