How a scene works
Every scene comes with its own setup, its own reason the two of you are in the room, and its own opening line. Pick "Only One Bed" and you do not start with "hi" and work towards a motel room. You start in the motel room, the rain already loud on the window, with the character speaking first.
You keep full control after that. The scene sets the frame, not the script. Where it goes is decided turn by turn, by you.
Any scene, any character
Scenes and characters are separate choices, so nothing is locked together. The same "Stuck in an Elevator" plays completely differently with a shy character than with a dominant one, and you can run the same character through half a dozen scenes without rebuilding her.
If none of the existing characters fit what you had in mind, you can build your own and drop them straight into any scene.
Ending a scene, or changing it
A scene is not a separate chat. It runs inside your normal conversation, so ending one leaves the relationship intact and everything you talked about still remembered. Close it and you are back to ordinary chat with the same character. Switch to another scene and the story moves without starting over.
Written to actually go somewhere
Each scene names who the character is in it, who you are, and what the unresolved thing between you is. That is the part most roleplay prompts leave out, and it is the reason a scene keeps moving instead of stalling into small talk after four messages.