I feel the same, but it's the good kind! they're background characters compared to the main couple which is a monster and a goat furry
The name of the game is King-Sized roommate, and the backstory alongside it would feel weird to have more than one romance option
EDIT:
Okay nevermind i looked on the description, there will be more characters that will appear and you can have romance options with them
But they aren't in the demo, they're a future build plan