thank you for the nice comment!! the other endings are just a bonus to make it feel more interactive, so i wouldnt necessarily recommend trying to go for them if you already got the best one where MC stays for the night, the story just cuts off early if you dont gather enough affection points.
one secret ending gets activated if you write Nicky's name in the part when he asks for yours. It's more of an easter egg with a lot of effort put in, really.
I'm also working on a short sequel!