Limit to 500 words. The hero and heroine are childhood sweethearts.
But they only have feelings for people of the same sex
So they agreed to wait until they both have lovers
Just get married
They did get married later
However, because of a lot of problems in social reality
Each other's lovers gradually left themselves
The male protagonist soon discovered that he had AIDS
So he committed suicide the day after he was diagnosed.
The heroine is weak because of her character
Can only stay alone in the world
Nostalgia for the people and things of the past