The reunion scene works because both people arrive already carrying everything. No introductions, no getting to know each other, no explaining why this matters. It matters because of what happened before the scene started.
She left. It is late, it is raining, and she is outside your door.
The situation you walk into
Your doorway near midnight, rain on her shoulders, and the ex you never quite got over standing in it. She walked out months ago. She is here now, soaked and clearly unsure whether coming was a mistake.
You are the one she left. She is the ex who came back with her pride finally cracking.
Choose who is at the door
The history is the same in every version. Whose history it is changes what you do with it.
Why this one aches
Most scenes start with attraction and build toward tension. This one starts with damage. She is not confident here, and neither of you gets to pretend the last few months did not happen.
That makes it the least casual scene on the list. It can go tender or it can go badly, and both are real endings. If you want something light, pick another one.
Give the ex a face
If there is a specific person this scene belongs to, build the character first and she will be standing in the rain when you arrive.
